wp/wp-includes/general-template.php
changeset 0 d970ebf37754
child 5 5e2f62d02dcd
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-1:000000000000 0:d970ebf37754
       
     1 <?php
       
     2 /**
       
     3  * General template tags that can go anywhere in a template.
       
     4  *
       
     5  * @package WordPress
       
     6  * @subpackage Template
       
     7  */
       
     8 
       
     9 /**
       
    10  * Load header template.
       
    11  *
       
    12  * Includes the header template for a theme or if a name is specified then a
       
    13  * specialised header will be included.
       
    14  *
       
    15  * For the parameter, if the file is called "header-special.php" then specify
       
    16  * "special".
       
    17  *
       
    18  * @uses locate_template()
       
    19  * @since 1.5.0
       
    20  * @uses do_action() Calls 'get_header' action.
       
    21  *
       
    22  * @param string $name The name of the specialised header.
       
    23  */
       
    24 function get_header( $name = null ) {
       
    25 	do_action( 'get_header', $name );
       
    26 
       
    27 	$templates = array();
       
    28 	$name = (string) $name;
       
    29 	if ( '' !== $name )
       
    30 		$templates[] = "header-{$name}.php";
       
    31 
       
    32 	$templates[] = 'header.php';
       
    33 
       
    34 	// Backward compat code will be removed in a future release
       
    35 	if ('' == locate_template($templates, true))
       
    36 		load_template( ABSPATH . WPINC . '/theme-compat/header.php');
       
    37 }
       
    38 
       
    39 /**
       
    40  * Load footer template.
       
    41  *
       
    42  * Includes the footer template for a theme or if a name is specified then a
       
    43  * specialised footer will be included.
       
    44  *
       
    45  * For the parameter, if the file is called "footer-special.php" then specify
       
    46  * "special".
       
    47  *
       
    48  * @uses locate_template()
       
    49  * @since 1.5.0
       
    50  * @uses do_action() Calls 'get_footer' action.
       
    51  *
       
    52  * @param string $name The name of the specialised footer.
       
    53  */
       
    54 function get_footer( $name = null ) {
       
    55 	do_action( 'get_footer', $name );
       
    56 
       
    57 	$templates = array();
       
    58 	$name = (string) $name;
       
    59 	if ( '' !== $name )
       
    60 		$templates[] = "footer-{$name}.php";
       
    61 
       
    62 	$templates[] = 'footer.php';
       
    63 
       
    64 	// Backward compat code will be removed in a future release
       
    65 	if ('' == locate_template($templates, true))
       
    66 		load_template( ABSPATH . WPINC . '/theme-compat/footer.php');
       
    67 }
       
    68 
       
    69 /**
       
    70  * Load sidebar template.
       
    71  *
       
    72  * Includes the sidebar template for a theme or if a name is specified then a
       
    73  * specialised sidebar will be included.
       
    74  *
       
    75  * For the parameter, if the file is called "sidebar-special.php" then specify
       
    76  * "special".
       
    77  *
       
    78  * @uses locate_template()
       
    79  * @since 1.5.0
       
    80  * @uses do_action() Calls 'get_sidebar' action.
       
    81  *
       
    82  * @param string $name The name of the specialised sidebar.
       
    83  */
       
    84 function get_sidebar( $name = null ) {
       
    85 	do_action( 'get_sidebar', $name );
       
    86 
       
    87 	$templates = array();
       
    88 	$name = (string) $name;
       
    89 	if ( '' !== $name )
       
    90 		$templates[] = "sidebar-{$name}.php";
       
    91 
       
    92 	$templates[] = 'sidebar.php';
       
    93 
       
    94 	// Backward compat code will be removed in a future release
       
    95 	if ('' == locate_template($templates, true))
       
    96 		load_template( ABSPATH . WPINC . '/theme-compat/sidebar.php');
       
    97 }
       
    98 
       
    99 /**
       
   100  * Load a template part into a template
       
   101  *
       
   102  * Makes it easy for a theme to reuse sections of code in a easy to overload way
       
   103  * for child themes.
       
   104  *
       
   105  * Includes the named template part for a theme or if a name is specified then a
       
   106  * specialised part will be included. If the theme contains no {slug}.php file
       
   107  * then no template will be included.
       
   108  *
       
   109  * The template is included using require, not require_once, so you may include the
       
   110  * same template part multiple times.
       
   111  *
       
   112  * For the $name parameter, if the file is called "{slug}-special.php" then specify
       
   113  * "special".
       
   114  *
       
   115  * @uses locate_template()
       
   116  * @since 3.0.0
       
   117  * @uses do_action() Calls 'get_template_part_{$slug}' action.
       
   118  *
       
   119  * @param string $slug The slug name for the generic template.
       
   120  * @param string $name The name of the specialised template.
       
   121  */
       
   122 function get_template_part( $slug, $name = null ) {
       
   123 	do_action( "get_template_part_{$slug}", $slug, $name );
       
   124 
       
   125 	$templates = array();
       
   126 	$name = (string) $name;
       
   127 	if ( '' !== $name )
       
   128 		$templates[] = "{$slug}-{$name}.php";
       
   129 
       
   130 	$templates[] = "{$slug}.php";
       
   131 
       
   132 	locate_template($templates, true, false);
       
   133 }
       
   134 
       
   135 /**
       
   136  * Display search form.
       
   137  *
       
   138  * Will first attempt to locate the searchform.php file in either the child or
       
   139  * the parent, then load it. If it doesn't exist, then the default search form
       
   140  * will be displayed. The default search form is HTML, which will be displayed.
       
   141  * There is a filter applied to the search form HTML in order to edit or replace
       
   142  * it. The filter is 'get_search_form'.
       
   143  *
       
   144  * This function is primarily used by themes which want to hardcode the search
       
   145  * form into the sidebar and also by the search widget in WordPress.
       
   146  *
       
   147  * There is also an action that is called whenever the function is run called,
       
   148  * 'pre_get_search_form'. This can be useful for outputting JavaScript that the
       
   149  * search relies on or various formatting that applies to the beginning of the
       
   150  * search. To give a few examples of what it can be used for.
       
   151  *
       
   152  * @since 2.7.0
       
   153  * @uses apply_filters() Calls 'search_form_format' filter to determine which type to use for the search field.
       
   154  *  If set to 'html5', it changes to search input type and adds placeholder text.
       
   155  *
       
   156  * @param boolean $echo Default to echo and not return the form.
       
   157  * @return string|null String when retrieving, null when displaying or if searchform.php exists.
       
   158  */
       
   159 function get_search_form( $echo = true ) {
       
   160 	do_action( 'pre_get_search_form' );
       
   161 
       
   162 	$format = current_theme_supports( 'html5', 'search-form' ) ? 'html5' : 'xhtml';
       
   163 	$format = apply_filters( 'search_form_format', $format );
       
   164 
       
   165 	$search_form_template = locate_template( 'searchform.php' );
       
   166 	if ( '' != $search_form_template ) {
       
   167 		ob_start();
       
   168 		require( $search_form_template );
       
   169 		$form = ob_get_clean();
       
   170 	} else {
       
   171 		if ( 'html5' == $format ) {
       
   172 			$form = '<form role="search" method="get" class="search-form" action="' . esc_url( home_url( '/' ) ) . '">
       
   173 				<label>
       
   174 					<span class="screen-reader-text">' . _x( 'Search for:', 'label' ) . '</span>
       
   175 					<input type="search" class="search-field" placeholder="' . esc_attr_x( 'Search &hellip;', 'placeholder' ) . '" value="' . get_search_query() . '" name="s" title="' . esc_attr_x( 'Search for:', 'label' ) . '" />
       
   176 				</label>
       
   177 				<input type="submit" class="search-submit" value="'. esc_attr_x( 'Search', 'submit button' ) .'" />
       
   178 			</form>';
       
   179 		} else {
       
   180 			$form = '<form role="search" method="get" id="searchform" class="searchform" action="' . esc_url( home_url( '/' ) ) . '">
       
   181 				<div>
       
   182 					<label class="screen-reader-text" for="s">' . _x( 'Search for:', 'label' ) . '</label>
       
   183 					<input type="text" value="' . get_search_query() . '" name="s" id="s" />
       
   184 					<input type="submit" id="searchsubmit" value="'. esc_attr_x( 'Search', 'submit button' ) .'" />
       
   185 				</div>
       
   186 			</form>';
       
   187 		}
       
   188 	}
       
   189 
       
   190 	$result = apply_filters( 'get_search_form', $form );
       
   191 	if ( null === $result )
       
   192 		$result = $form;
       
   193 
       
   194 	if ( $echo )
       
   195 		echo $result;
       
   196 	else
       
   197 		return $result;
       
   198 }
       
   199 
       
   200 /**
       
   201  * Display the Log In/Out link.
       
   202  *
       
   203  * Displays a link, which allows users to navigate to the Log In page to log in
       
   204  * or log out depending on whether they are currently logged in.
       
   205  *
       
   206  * @since 1.5.0
       
   207  * @uses apply_filters() Calls 'loginout' hook on HTML link content.
       
   208  *
       
   209  * @param string $redirect Optional path to redirect to on login/logout.
       
   210  * @param boolean $echo Default to echo and not return the link.
       
   211  * @return string|null String when retrieving, null when displaying.
       
   212  */
       
   213 function wp_loginout($redirect = '', $echo = true) {
       
   214 	if ( ! is_user_logged_in() )
       
   215 		$link = '<a href="' . esc_url( wp_login_url($redirect) ) . '">' . __('Log in') . '</a>';
       
   216 	else
       
   217 		$link = '<a href="' . esc_url( wp_logout_url($redirect) ) . '">' . __('Log out') . '</a>';
       
   218 
       
   219 	if ( $echo )
       
   220 		echo apply_filters('loginout', $link);
       
   221 	else
       
   222 		return apply_filters('loginout', $link);
       
   223 }
       
   224 
       
   225 /**
       
   226  * Returns the Log Out URL.
       
   227  *
       
   228  * Returns the URL that allows the user to log out of the site.
       
   229  *
       
   230  * @since 2.7.0
       
   231  * @uses wp_nonce_url() To protect against CSRF.
       
   232  * @uses site_url() To generate the log out URL.
       
   233  * @uses apply_filters() calls 'logout_url' hook on final logout URL.
       
   234  *
       
   235  * @param string $redirect Path to redirect to on logout.
       
   236  * @return string A log out URL.
       
   237  */
       
   238 function wp_logout_url($redirect = '') {
       
   239 	$args = array( 'action' => 'logout' );
       
   240 	if ( !empty($redirect) ) {
       
   241 		$args['redirect_to'] = urlencode( $redirect );
       
   242 	}
       
   243 
       
   244 	$logout_url = add_query_arg($args, site_url('wp-login.php', 'login'));
       
   245 	$logout_url = wp_nonce_url( $logout_url, 'log-out' );
       
   246 
       
   247 	return apply_filters('logout_url', $logout_url, $redirect);
       
   248 }
       
   249 
       
   250 /**
       
   251  * Returns the Log In URL.
       
   252  *
       
   253  * Returns the URL that allows the user to log in to the site.
       
   254  *
       
   255  * @since 2.7.0
       
   256  * @uses site_url() To generate the log in URL.
       
   257  * @uses apply_filters() calls 'login_url' hook on final login URL.
       
   258  *
       
   259  * @param string $redirect Path to redirect to on login.
       
   260  * @param bool $force_reauth Whether to force reauthorization, even if a cookie is present. Default is false.
       
   261  * @return string A log in URL.
       
   262  */
       
   263 function wp_login_url($redirect = '', $force_reauth = false) {
       
   264 	$login_url = site_url('wp-login.php', 'login');
       
   265 
       
   266 	if ( !empty($redirect) )
       
   267 		$login_url = add_query_arg('redirect_to', urlencode($redirect), $login_url);
       
   268 
       
   269 	if ( $force_reauth )
       
   270 		$login_url = add_query_arg('reauth', '1', $login_url);
       
   271 
       
   272 	return apply_filters('login_url', $login_url, $redirect);
       
   273 }
       
   274 
       
   275 /**
       
   276  * Returns the user registration URL.
       
   277  *
       
   278  * Returns the URL that allows the user to register on the site.
       
   279  *
       
   280  * @since 3.6.0
       
   281  * @uses site_url() To generate the registration URL.
       
   282  * @uses apply_filters() calls 'register_url' hook on final URL.
       
   283  *
       
   284  * @return string
       
   285  */
       
   286 function wp_registration_url() {
       
   287 	return apply_filters( 'register_url', site_url( 'wp-login.php?action=register', 'login' ) );
       
   288 }
       
   289 
       
   290 /**
       
   291  * Provides a simple login form for use anywhere within WordPress. By default, it echoes
       
   292  * the HTML immediately. Pass array('echo'=>false) to return the string instead.
       
   293  *
       
   294  * @since 3.0.0
       
   295  * @param array $args Configuration options to modify the form output.
       
   296  * @return string|null String when retrieving, null when displaying.
       
   297  */
       
   298 function wp_login_form( $args = array() ) {
       
   299 	$defaults = array(
       
   300 		'echo' => true,
       
   301 		'redirect' => ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'], // Default redirect is back to the current page
       
   302 		'form_id' => 'loginform',
       
   303 		'label_username' => __( 'Username' ),
       
   304 		'label_password' => __( 'Password' ),
       
   305 		'label_remember' => __( 'Remember Me' ),
       
   306 		'label_log_in' => __( 'Log In' ),
       
   307 		'id_username' => 'user_login',
       
   308 		'id_password' => 'user_pass',
       
   309 		'id_remember' => 'rememberme',
       
   310 		'id_submit' => 'wp-submit',
       
   311 		'remember' => true,
       
   312 		'value_username' => '',
       
   313 		'value_remember' => false, // Set this to true to default the "Remember me" checkbox to checked
       
   314 	);
       
   315 	$args = wp_parse_args( $args, apply_filters( 'login_form_defaults', $defaults ) );
       
   316 
       
   317 	$form = '
       
   318 		<form name="' . $args['form_id'] . '" id="' . $args['form_id'] . '" action="' . esc_url( site_url( 'wp-login.php', 'login_post' ) ) . '" method="post">
       
   319 			' . apply_filters( 'login_form_top', '', $args ) . '
       
   320 			<p class="login-username">
       
   321 				<label for="' . esc_attr( $args['id_username'] ) . '">' . esc_html( $args['label_username'] ) . '</label>
       
   322 				<input type="text" name="log" id="' . esc_attr( $args['id_username'] ) . '" class="input" value="' . esc_attr( $args['value_username'] ) . '" size="20" />
       
   323 			</p>
       
   324 			<p class="login-password">
       
   325 				<label for="' . esc_attr( $args['id_password'] ) . '">' . esc_html( $args['label_password'] ) . '</label>
       
   326 				<input type="password" name="pwd" id="' . esc_attr( $args['id_password'] ) . '" class="input" value="" size="20" />
       
   327 			</p>
       
   328 			' . apply_filters( 'login_form_middle', '', $args ) . '
       
   329 			' . ( $args['remember'] ? '<p class="login-remember"><label><input name="rememberme" type="checkbox" id="' . esc_attr( $args['id_remember'] ) . '" value="forever"' . ( $args['value_remember'] ? ' checked="checked"' : '' ) . ' /> ' . esc_html( $args['label_remember'] ) . '</label></p>' : '' ) . '
       
   330 			<p class="login-submit">
       
   331 				<input type="submit" name="wp-submit" id="' . esc_attr( $args['id_submit'] ) . '" class="button-primary" value="' . esc_attr( $args['label_log_in'] ) . '" />
       
   332 				<input type="hidden" name="redirect_to" value="' . esc_url( $args['redirect'] ) . '" />
       
   333 			</p>
       
   334 			' . apply_filters( 'login_form_bottom', '', $args ) . '
       
   335 		</form>';
       
   336 
       
   337 	if ( $args['echo'] )
       
   338 		echo $form;
       
   339 	else
       
   340 		return $form;
       
   341 }
       
   342 
       
   343 /**
       
   344  * Returns the Lost Password URL.
       
   345  *
       
   346  * Returns the URL that allows the user to retrieve the lost password
       
   347  *
       
   348  * @since 2.8.0
       
   349  * @uses site_url() To generate the lost password URL
       
   350  * @uses apply_filters() calls 'lostpassword_url' hook on the lostpassword url
       
   351  *
       
   352  * @param string $redirect Path to redirect to on login.
       
   353  * @return string Lost password URL.
       
   354  */
       
   355 function wp_lostpassword_url( $redirect = '' ) {
       
   356 	$args = array( 'action' => 'lostpassword' );
       
   357 	if ( !empty($redirect) ) {
       
   358 		$args['redirect_to'] = $redirect;
       
   359 	}
       
   360 
       
   361 	$lostpassword_url = add_query_arg( $args, network_site_url('wp-login.php', 'login') );
       
   362 	return apply_filters( 'lostpassword_url', $lostpassword_url, $redirect );
       
   363 }
       
   364 
       
   365 /**
       
   366  * Display the Registration or Admin link.
       
   367  *
       
   368  * Display a link which allows the user to navigate to the registration page if
       
   369  * not logged in and registration is enabled or to the dashboard if logged in.
       
   370  *
       
   371  * @since 1.5.0
       
   372  * @uses apply_filters() Calls 'register' hook on register / admin link content.
       
   373  *
       
   374  * @param string $before Text to output before the link (defaults to <li>).
       
   375  * @param string $after Text to output after the link (defaults to </li>).
       
   376  * @param boolean $echo Default to echo and not return the link.
       
   377  * @return string|null String when retrieving, null when displaying.
       
   378  */
       
   379 function wp_register( $before = '<li>', $after = '</li>', $echo = true ) {
       
   380 
       
   381 	if ( ! is_user_logged_in() ) {
       
   382 		if ( get_option('users_can_register') )
       
   383 			$link = $before . '<a href="' . esc_url( wp_registration_url() ) . '">' . __('Register') . '</a>' . $after;
       
   384 		else
       
   385 			$link = '';
       
   386 	} else {
       
   387 		$link = $before . '<a href="' . admin_url() . '">' . __('Site Admin') . '</a>' . $after;
       
   388 	}
       
   389 
       
   390 	if ( $echo )
       
   391 		echo apply_filters('register', $link);
       
   392 	else
       
   393 		return apply_filters('register', $link);
       
   394 }
       
   395 
       
   396 /**
       
   397  * Theme container function for the 'wp_meta' action.
       
   398  *
       
   399  * The 'wp_meta' action can have several purposes, depending on how you use it,
       
   400  * but one purpose might have been to allow for theme switching.
       
   401  *
       
   402  * @since 1.5.0
       
   403  * @link http://trac.wordpress.org/ticket/1458 Explanation of 'wp_meta' action.
       
   404  * @uses do_action() Calls 'wp_meta' hook.
       
   405  */
       
   406 function wp_meta() {
       
   407 	do_action('wp_meta');
       
   408 }
       
   409 
       
   410 /**
       
   411  * Display information about the blog.
       
   412  *
       
   413  * @see get_bloginfo() For possible values for the parameter.
       
   414  * @since 0.71
       
   415  *
       
   416  * @param string $show What to display.
       
   417  */
       
   418 function bloginfo( $show='' ) {
       
   419 	echo get_bloginfo( $show, 'display' );
       
   420 }
       
   421 
       
   422 /**
       
   423  * Retrieve information about the blog.
       
   424  *
       
   425  * Some show parameter values are deprecated and will be removed in future
       
   426  * versions. These options will trigger the _deprecated_argument() function.
       
   427  * The deprecated blog info options are listed in the function contents.
       
   428  *
       
   429  * The possible values for the 'show' parameter are listed below.
       
   430  * <ol>
       
   431  * <li><strong>url</strong> - Blog URI to homepage.</li>
       
   432  * <li><strong>wpurl</strong> - Blog URI path to WordPress.</li>
       
   433  * <li><strong>description</strong> - Secondary title</li>
       
   434  * </ol>
       
   435  *
       
   436  * The feed URL options can be retrieved from 'rdf_url' (RSS 0.91),
       
   437  * 'rss_url' (RSS 1.0), 'rss2_url' (RSS 2.0), or 'atom_url' (Atom feed). The
       
   438  * comment feeds can be retrieved from the 'comments_atom_url' (Atom comment
       
   439  * feed) or 'comments_rss2_url' (RSS 2.0 comment feed).
       
   440  *
       
   441  * @since 0.71
       
   442  *
       
   443  * @param string $show Blog info to retrieve.
       
   444  * @param string $filter How to filter what is retrieved.
       
   445  * @return string Mostly string values, might be empty.
       
   446  */
       
   447 function get_bloginfo( $show = '', $filter = 'raw' ) {
       
   448 
       
   449 	switch( $show ) {
       
   450 		case 'home' : // DEPRECATED
       
   451 		case 'siteurl' : // DEPRECATED
       
   452 			_deprecated_argument( __FUNCTION__, '2.2', sprintf( __('The <code>%s</code> option is deprecated for the family of <code>bloginfo()</code> functions.' ), $show ) . ' ' . sprintf( __( 'Use the <code>%s</code> option instead.' ), 'url'  ) );
       
   453 		case 'url' :
       
   454 			$output = home_url();
       
   455 			break;
       
   456 		case 'wpurl' :
       
   457 			$output = site_url();
       
   458 			break;
       
   459 		case 'description':
       
   460 			$output = get_option('blogdescription');
       
   461 			break;
       
   462 		case 'rdf_url':
       
   463 			$output = get_feed_link('rdf');
       
   464 			break;
       
   465 		case 'rss_url':
       
   466 			$output = get_feed_link('rss');
       
   467 			break;
       
   468 		case 'rss2_url':
       
   469 			$output = get_feed_link('rss2');
       
   470 			break;
       
   471 		case 'atom_url':
       
   472 			$output = get_feed_link('atom');
       
   473 			break;
       
   474 		case 'comments_atom_url':
       
   475 			$output = get_feed_link('comments_atom');
       
   476 			break;
       
   477 		case 'comments_rss2_url':
       
   478 			$output = get_feed_link('comments_rss2');
       
   479 			break;
       
   480 		case 'pingback_url':
       
   481 			$output = site_url( 'xmlrpc.php' );
       
   482 			break;
       
   483 		case 'stylesheet_url':
       
   484 			$output = get_stylesheet_uri();
       
   485 			break;
       
   486 		case 'stylesheet_directory':
       
   487 			$output = get_stylesheet_directory_uri();
       
   488 			break;
       
   489 		case 'template_directory':
       
   490 		case 'template_url':
       
   491 			$output = get_template_directory_uri();
       
   492 			break;
       
   493 		case 'admin_email':
       
   494 			$output = get_option('admin_email');
       
   495 			break;
       
   496 		case 'charset':
       
   497 			$output = get_option('blog_charset');
       
   498 			if ('' == $output) $output = 'UTF-8';
       
   499 			break;
       
   500 		case 'html_type' :
       
   501 			$output = get_option('html_type');
       
   502 			break;
       
   503 		case 'version':
       
   504 			global $wp_version;
       
   505 			$output = $wp_version;
       
   506 			break;
       
   507 		case 'language':
       
   508 			$output = get_locale();
       
   509 			$output = str_replace('_', '-', $output);
       
   510 			break;
       
   511 		case 'text_direction':
       
   512 			//_deprecated_argument( __FUNCTION__, '2.2', sprintf( __('The <code>%s</code> option is deprecated for the family of <code>bloginfo()</code> functions.' ), $show ) . ' ' . sprintf( __( 'Use the <code>%s</code> function instead.' ), 'is_rtl()'  ) );
       
   513 			if ( function_exists( 'is_rtl' ) ) {
       
   514 				$output = is_rtl() ? 'rtl' : 'ltr';
       
   515 			} else {
       
   516 				$output = 'ltr';
       
   517 			}
       
   518 			break;
       
   519 		case 'name':
       
   520 		default:
       
   521 			$output = get_option('blogname');
       
   522 			break;
       
   523 	}
       
   524 
       
   525 	$url = true;
       
   526 	if (strpos($show, 'url') === false &&
       
   527 		strpos($show, 'directory') === false &&
       
   528 		strpos($show, 'home') === false)
       
   529 		$url = false;
       
   530 
       
   531 	if ( 'display' == $filter ) {
       
   532 		if ( $url )
       
   533 			$output = apply_filters('bloginfo_url', $output, $show);
       
   534 		else
       
   535 			$output = apply_filters('bloginfo', $output, $show);
       
   536 	}
       
   537 
       
   538 	return $output;
       
   539 }
       
   540 
       
   541 /**
       
   542  * Display or retrieve page title for all areas of blog.
       
   543  *
       
   544  * By default, the page title will display the separator before the page title,
       
   545  * so that the blog title will be before the page title. This is not good for
       
   546  * title display, since the blog title shows up on most tabs and not what is
       
   547  * important, which is the page that the user is looking at.
       
   548  *
       
   549  * There are also SEO benefits to having the blog title after or to the 'right'
       
   550  * or the page title. However, it is mostly common sense to have the blog title
       
   551  * to the right with most browsers supporting tabs. You can achieve this by
       
   552  * using the seplocation parameter and setting the value to 'right'. This change
       
   553  * was introduced around 2.5.0, in case backwards compatibility of themes is
       
   554  * important.
       
   555  *
       
   556  * @since 1.0.0
       
   557  *
       
   558  * @param string $sep Optional, default is '&raquo;'. How to separate the various items within the page title.
       
   559  * @param bool $display Optional, default is true. Whether to display or retrieve title.
       
   560  * @param string $seplocation Optional. Direction to display title, 'right'.
       
   561  * @return string|null String on retrieve, null when displaying.
       
   562  */
       
   563 function wp_title($sep = '&raquo;', $display = true, $seplocation = '') {
       
   564 	global $wpdb, $wp_locale;
       
   565 
       
   566 	$m = get_query_var('m');
       
   567 	$year = get_query_var('year');
       
   568 	$monthnum = get_query_var('monthnum');
       
   569 	$day = get_query_var('day');
       
   570 	$search = get_query_var('s');
       
   571 	$title = '';
       
   572 
       
   573 	$t_sep = '%WP_TITILE_SEP%'; // Temporary separator, for accurate flipping, if necessary
       
   574 
       
   575 	// If there is a post
       
   576 	if ( is_single() || ( is_home() && !is_front_page() ) || ( is_page() && !is_front_page() ) ) {
       
   577 		$title = single_post_title( '', false );
       
   578 	}
       
   579 
       
   580 	// If there's a post type archive
       
   581 	if ( is_post_type_archive() ) {
       
   582 		$post_type = get_query_var( 'post_type' );
       
   583 		if ( is_array( $post_type ) )
       
   584 			$post_type = reset( $post_type );
       
   585 		$post_type_object = get_post_type_object( $post_type );
       
   586 		if ( ! $post_type_object->has_archive )
       
   587 			$title = post_type_archive_title( '', false );
       
   588 	}
       
   589 
       
   590 	// If there's a category or tag
       
   591 	if ( is_category() || is_tag() ) {
       
   592 		$title = single_term_title( '', false );
       
   593 	}
       
   594 
       
   595 	// If there's a taxonomy
       
   596 	if ( is_tax() ) {
       
   597 		$term = get_queried_object();
       
   598 		if ( $term ) {
       
   599 			$tax = get_taxonomy( $term->taxonomy );
       
   600 			$title = single_term_title( $tax->labels->name . $t_sep, false );
       
   601 		}
       
   602 	}
       
   603 
       
   604 	// If there's an author
       
   605 	if ( is_author() ) {
       
   606 		$author = get_queried_object();
       
   607 		if ( $author )
       
   608 			$title = $author->display_name;
       
   609 	}
       
   610 
       
   611 	// Post type archives with has_archive should override terms.
       
   612 	if ( is_post_type_archive() && $post_type_object->has_archive )
       
   613 		$title = post_type_archive_title( '', false );
       
   614 
       
   615 	// If there's a month
       
   616 	if ( is_archive() && !empty($m) ) {
       
   617 		$my_year = substr($m, 0, 4);
       
   618 		$my_month = $wp_locale->get_month(substr($m, 4, 2));
       
   619 		$my_day = intval(substr($m, 6, 2));
       
   620 		$title = $my_year . ( $my_month ? $t_sep . $my_month : '' ) . ( $my_day ? $t_sep . $my_day : '' );
       
   621 	}
       
   622 
       
   623 	// If there's a year
       
   624 	if ( is_archive() && !empty($year) ) {
       
   625 		$title = $year;
       
   626 		if ( !empty($monthnum) )
       
   627 			$title .= $t_sep . $wp_locale->get_month($monthnum);
       
   628 		if ( !empty($day) )
       
   629 			$title .= $t_sep . zeroise($day, 2);
       
   630 	}
       
   631 
       
   632 	// If it's a search
       
   633 	if ( is_search() ) {
       
   634 		/* translators: 1: separator, 2: search phrase */
       
   635 		$title = sprintf(__('Search Results %1$s %2$s'), $t_sep, strip_tags($search));
       
   636 	}
       
   637 
       
   638 	// If it's a 404 page
       
   639 	if ( is_404() ) {
       
   640 		$title = __('Page not found');
       
   641 	}
       
   642 
       
   643 	$prefix = '';
       
   644 	if ( !empty($title) )
       
   645 		$prefix = " $sep ";
       
   646 
       
   647  	// Determines position of the separator and direction of the breadcrumb
       
   648 	if ( 'right' == $seplocation ) { // sep on right, so reverse the order
       
   649 		$title_array = explode( $t_sep, $title );
       
   650 		$title_array = array_reverse( $title_array );
       
   651 		$title = implode( " $sep ", $title_array ) . $prefix;
       
   652 	} else {
       
   653 		$title_array = explode( $t_sep, $title );
       
   654 		$title = $prefix . implode( " $sep ", $title_array );
       
   655 	}
       
   656 
       
   657 	$title = apply_filters('wp_title', $title, $sep, $seplocation);
       
   658 
       
   659 	// Send it out
       
   660 	if ( $display )
       
   661 		echo $title;
       
   662 	else
       
   663 		return $title;
       
   664 
       
   665 }
       
   666 
       
   667 /**
       
   668  * Display or retrieve page title for post.
       
   669  *
       
   670  * This is optimized for single.php template file for displaying the post title.
       
   671  *
       
   672  * It does not support placing the separator after the title, but by leaving the
       
   673  * prefix parameter empty, you can set the title separator manually. The prefix
       
   674  * does not automatically place a space between the prefix, so if there should
       
   675  * be a space, the parameter value will need to have it at the end.
       
   676  *
       
   677  * @since 0.71
       
   678  *
       
   679  * @param string $prefix Optional. What to display before the title.
       
   680  * @param bool $display Optional, default is true. Whether to display or retrieve title.
       
   681  * @return string|null Title when retrieving, null when displaying or failure.
       
   682  */
       
   683 function single_post_title($prefix = '', $display = true) {
       
   684 	$_post = get_queried_object();
       
   685 
       
   686 	if ( !isset($_post->post_title) )
       
   687 		return;
       
   688 
       
   689 	$title = apply_filters('single_post_title', $_post->post_title, $_post);
       
   690 	if ( $display )
       
   691 		echo $prefix . $title;
       
   692 	else
       
   693 		return $prefix . $title;
       
   694 }
       
   695 
       
   696 /**
       
   697  * Display or retrieve title for a post type archive.
       
   698  *
       
   699  * This is optimized for archive.php and archive-{$post_type}.php template files
       
   700  * for displaying the title of the post type.
       
   701  *
       
   702  * @since 3.1.0
       
   703  *
       
   704  * @param string $prefix Optional. What to display before the title.
       
   705  * @param bool $display Optional, default is true. Whether to display or retrieve title.
       
   706  * @return string|null Title when retrieving, null when displaying or failure.
       
   707  */
       
   708 function post_type_archive_title( $prefix = '', $display = true ) {
       
   709 	if ( ! is_post_type_archive() )
       
   710 		return;
       
   711 
       
   712 	$post_type = get_query_var( 'post_type' );
       
   713 	if ( is_array( $post_type ) )
       
   714 		$post_type = reset( $post_type );
       
   715 
       
   716 	$post_type_obj = get_post_type_object( $post_type );
       
   717 	$title = apply_filters('post_type_archive_title', $post_type_obj->labels->name );
       
   718 
       
   719 	if ( $display )
       
   720 		echo $prefix . $title;
       
   721 	else
       
   722 		return $prefix . $title;
       
   723 }
       
   724 
       
   725 /**
       
   726  * Display or retrieve page title for category archive.
       
   727  *
       
   728  * This is useful for category template file or files, because it is optimized
       
   729  * for category page title and with less overhead than {@link wp_title()}.
       
   730  *
       
   731  * It does not support placing the separator after the title, but by leaving the
       
   732  * prefix parameter empty, you can set the title separator manually. The prefix
       
   733  * does not automatically place a space between the prefix, so if there should
       
   734  * be a space, the parameter value will need to have it at the end.
       
   735  *
       
   736  * @since 0.71
       
   737  *
       
   738  * @param string $prefix Optional. What to display before the title.
       
   739  * @param bool $display Optional, default is true. Whether to display or retrieve title.
       
   740  * @return string|null Title when retrieving, null when displaying or failure.
       
   741  */
       
   742 function single_cat_title( $prefix = '', $display = true ) {
       
   743 	return single_term_title( $prefix, $display );
       
   744 }
       
   745 
       
   746 /**
       
   747  * Display or retrieve page title for tag post archive.
       
   748  *
       
   749  * Useful for tag template files for displaying the tag page title. It has less
       
   750  * overhead than {@link wp_title()}, because of its limited implementation.
       
   751  *
       
   752  * It does not support placing the separator after the title, but by leaving the
       
   753  * prefix parameter empty, you can set the title separator manually. The prefix
       
   754  * does not automatically place a space between the prefix, so if there should
       
   755  * be a space, the parameter value will need to have it at the end.
       
   756  *
       
   757  * @since 2.3.0
       
   758  *
       
   759  * @param string $prefix Optional. What to display before the title.
       
   760  * @param bool $display Optional, default is true. Whether to display or retrieve title.
       
   761  * @return string|null Title when retrieving, null when displaying or failure.
       
   762  */
       
   763 function single_tag_title( $prefix = '', $display = true ) {
       
   764 	return single_term_title( $prefix, $display );
       
   765 }
       
   766 
       
   767 /**
       
   768  * Display or retrieve page title for taxonomy term archive.
       
   769  *
       
   770  * Useful for taxonomy term template files for displaying the taxonomy term page title.
       
   771  * It has less overhead than {@link wp_title()}, because of its limited implementation.
       
   772  *
       
   773  * It does not support placing the separator after the title, but by leaving the
       
   774  * prefix parameter empty, you can set the title separator manually. The prefix
       
   775  * does not automatically place a space between the prefix, so if there should
       
   776  * be a space, the parameter value will need to have it at the end.
       
   777  *
       
   778  * @since 3.1.0
       
   779  *
       
   780  * @param string $prefix Optional. What to display before the title.
       
   781  * @param bool $display Optional, default is true. Whether to display or retrieve title.
       
   782  * @return string|null Title when retrieving, null when displaying or failure.
       
   783  */
       
   784 function single_term_title( $prefix = '', $display = true ) {
       
   785 	$term = get_queried_object();
       
   786 
       
   787 	if ( !$term )
       
   788 		return;
       
   789 
       
   790 	if ( is_category() )
       
   791 		$term_name = apply_filters( 'single_cat_title', $term->name );
       
   792 	elseif ( is_tag() )
       
   793 		$term_name = apply_filters( 'single_tag_title', $term->name );
       
   794 	elseif ( is_tax() )
       
   795 		$term_name = apply_filters( 'single_term_title', $term->name );
       
   796 	else
       
   797 		return;
       
   798 
       
   799 	if ( empty( $term_name ) )
       
   800 		return;
       
   801 
       
   802 	if ( $display )
       
   803 		echo $prefix . $term_name;
       
   804 	else
       
   805 		return $prefix . $term_name;
       
   806 }
       
   807 
       
   808 /**
       
   809  * Display or retrieve page title for post archive based on date.
       
   810  *
       
   811  * Useful for when the template only needs to display the month and year, if
       
   812  * either are available. Optimized for just this purpose, so if it is all that
       
   813  * is needed, should be better than {@link wp_title()}.
       
   814  *
       
   815  * It does not support placing the separator after the title, but by leaving the
       
   816  * prefix parameter empty, you can set the title separator manually. The prefix
       
   817  * does not automatically place a space between the prefix, so if there should
       
   818  * be a space, the parameter value will need to have it at the end.
       
   819  *
       
   820  * @since 0.71
       
   821  *
       
   822  * @param string $prefix Optional. What to display before the title.
       
   823  * @param bool $display Optional, default is true. Whether to display or retrieve title.
       
   824  * @return string|null Title when retrieving, null when displaying or failure.
       
   825  */
       
   826 function single_month_title($prefix = '', $display = true ) {
       
   827 	global $wp_locale;
       
   828 
       
   829 	$m = get_query_var('m');
       
   830 	$year = get_query_var('year');
       
   831 	$monthnum = get_query_var('monthnum');
       
   832 
       
   833 	if ( !empty($monthnum) && !empty($year) ) {
       
   834 		$my_year = $year;
       
   835 		$my_month = $wp_locale->get_month($monthnum);
       
   836 	} elseif ( !empty($m) ) {
       
   837 		$my_year = substr($m, 0, 4);
       
   838 		$my_month = $wp_locale->get_month(substr($m, 4, 2));
       
   839 	}
       
   840 
       
   841 	if ( empty($my_month) )
       
   842 		return false;
       
   843 
       
   844 	$result = $prefix . $my_month . $prefix . $my_year;
       
   845 
       
   846 	if ( !$display )
       
   847 		return $result;
       
   848 	echo $result;
       
   849 }
       
   850 
       
   851 /**
       
   852  * Retrieve archive link content based on predefined or custom code.
       
   853  *
       
   854  * The format can be one of four styles. The 'link' for head element, 'option'
       
   855  * for use in the select element, 'html' for use in list (either ol or ul HTML
       
   856  * elements). Custom content is also supported using the before and after
       
   857  * parameters.
       
   858  *
       
   859  * The 'link' format uses the link HTML element with the <em>archives</em>
       
   860  * relationship. The before and after parameters are not used. The text
       
   861  * parameter is used to describe the link.
       
   862  *
       
   863  * The 'option' format uses the option HTML element for use in select element.
       
   864  * The value is the url parameter and the before and after parameters are used
       
   865  * between the text description.
       
   866  *
       
   867  * The 'html' format, which is the default, uses the li HTML element for use in
       
   868  * the list HTML elements. The before parameter is before the link and the after
       
   869  * parameter is after the closing link.
       
   870  *
       
   871  * The custom format uses the before parameter before the link ('a' HTML
       
   872  * element) and the after parameter after the closing link tag. If the above
       
   873  * three values for the format are not used, then custom format is assumed.
       
   874  *
       
   875  * @since 1.0.0
       
   876  *
       
   877  * @param string $url URL to archive.
       
   878  * @param string $text Archive text description.
       
   879  * @param string $format Optional, default is 'html'. Can be 'link', 'option', 'html', or custom.
       
   880  * @param string $before Optional.
       
   881  * @param string $after Optional.
       
   882  * @return string HTML link content for archive.
       
   883  */
       
   884 function get_archives_link($url, $text, $format = 'html', $before = '', $after = '') {
       
   885 	$text = wptexturize($text);
       
   886 	$url = esc_url($url);
       
   887 
       
   888 	if ('link' == $format)
       
   889 		$link_html = "\t<link rel='archives' title='" . esc_attr( $text ) . "' href='$url' />\n";
       
   890 	elseif ('option' == $format)
       
   891 		$link_html = "\t<option value='$url'>$before $text $after</option>\n";
       
   892 	elseif ('html' == $format)
       
   893 		$link_html = "\t<li>$before<a href='$url'>$text</a>$after</li>\n";
       
   894 	else // custom
       
   895 		$link_html = "\t$before<a href='$url'>$text</a>$after\n";
       
   896 
       
   897 	$link_html = apply_filters( 'get_archives_link', $link_html );
       
   898 
       
   899 	return $link_html;
       
   900 }
       
   901 
       
   902 /**
       
   903  * Display archive links based on type and format.
       
   904  *
       
   905  * The 'type' argument offers a few choices and by default will display monthly
       
   906  * archive links. The other options for values are 'daily', 'weekly', 'monthly',
       
   907  * 'yearly', 'postbypost' or 'alpha'. Both 'postbypost' and 'alpha' display the
       
   908  * same archive link list, the difference between the two is that 'alpha'
       
   909  * will order by post title and 'postbypost' will order by post date.
       
   910  *
       
   911  * The date archives will logically display dates with links to the archive post
       
   912  * page. The 'postbypost' and 'alpha' values for 'type' argument will display
       
   913  * the post titles.
       
   914  *
       
   915  * The 'limit' argument will only display a limited amount of links, specified
       
   916  * by the 'limit' integer value. By default, there is no limit. The
       
   917  * 'show_post_count' argument will show how many posts are within the archive.
       
   918  * By default, the 'show_post_count' argument is set to false.
       
   919  *
       
   920  * For the 'format', 'before', and 'after' arguments, see {@link
       
   921  * get_archives_link()}. The values of these arguments have to do with that
       
   922  * function.
       
   923  *
       
   924  * @since 1.2.0
       
   925  *
       
   926  * @param string|array $args Optional. Override defaults.
       
   927  * @return string|null String when retrieving, null when displaying.
       
   928  */
       
   929 function wp_get_archives($args = '') {
       
   930 	global $wpdb, $wp_locale;
       
   931 
       
   932 	$defaults = array(
       
   933 		'type' => 'monthly', 'limit' => '',
       
   934 		'format' => 'html', 'before' => '',
       
   935 		'after' => '', 'show_post_count' => false,
       
   936 		'echo' => 1, 'order' => 'DESC',
       
   937 	);
       
   938 
       
   939 	$r = wp_parse_args( $args, $defaults );
       
   940 	extract( $r, EXTR_SKIP );
       
   941 
       
   942 	if ( '' == $type )
       
   943 		$type = 'monthly';
       
   944 
       
   945 	if ( '' != $limit ) {
       
   946 		$limit = absint($limit);
       
   947 		$limit = ' LIMIT '.$limit;
       
   948 	}
       
   949 
       
   950 	$order = strtoupper( $order );
       
   951 	if ( $order !== 'ASC' )
       
   952 		$order = 'DESC';
       
   953 
       
   954 	// this is what will separate dates on weekly archive links
       
   955 	$archive_week_separator = '&#8211;';
       
   956 
       
   957 	// over-ride general date format ? 0 = no: use the date format set in Options, 1 = yes: over-ride
       
   958 	$archive_date_format_over_ride = 0;
       
   959 
       
   960 	// options for daily archive (only if you over-ride the general date format)
       
   961 	$archive_day_date_format = 'Y/m/d';
       
   962 
       
   963 	// options for weekly archive (only if you over-ride the general date format)
       
   964 	$archive_week_start_date_format = 'Y/m/d';
       
   965 	$archive_week_end_date_format	= 'Y/m/d';
       
   966 
       
   967 	if ( !$archive_date_format_over_ride ) {
       
   968 		$archive_day_date_format = get_option('date_format');
       
   969 		$archive_week_start_date_format = get_option('date_format');
       
   970 		$archive_week_end_date_format = get_option('date_format');
       
   971 	}
       
   972 
       
   973 	$where = apply_filters( 'getarchives_where', "WHERE post_type = 'post' AND post_status = 'publish'", $r );
       
   974 	$join = apply_filters( 'getarchives_join', '', $r );
       
   975 
       
   976 	$output = '';
       
   977 
       
   978 	$last_changed = wp_cache_get( 'last_changed', 'posts' );
       
   979 	if ( ! $last_changed ) {
       
   980 		$last_changed = microtime();
       
   981 		wp_cache_set( 'last_changed', $last_changed, 'posts' );
       
   982 	}
       
   983 
       
   984 	if ( 'monthly' == $type ) {
       
   985 		$query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date) ORDER BY post_date $order $limit";
       
   986 		$key = md5( $query );
       
   987 		$key = "wp_get_archives:$key:$last_changed";
       
   988 		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {
       
   989 			$results = $wpdb->get_results( $query );
       
   990 			wp_cache_set( $key, $results, 'posts' );
       
   991 		}
       
   992 		if ( $results ) {
       
   993 			$afterafter = $after;
       
   994 			foreach ( (array) $results as $result ) {
       
   995 				$url = get_month_link( $result->year, $result->month );
       
   996 				/* translators: 1: month name, 2: 4-digit year */
       
   997 				$text = sprintf(__('%1$s %2$d'), $wp_locale->get_month($result->month), $result->year);
       
   998 				if ( $show_post_count )
       
   999 					$after = '&nbsp;('.$result->posts.')' . $afterafter;
       
  1000 				$output .= get_archives_link($url, $text, $format, $before, $after);
       
  1001 			}
       
  1002 		}
       
  1003 	} elseif ('yearly' == $type) {
       
  1004 		$query = "SELECT YEAR(post_date) AS `year`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date) ORDER BY post_date $order $limit";
       
  1005 		$key = md5( $query );
       
  1006 		$key = "wp_get_archives:$key:$last_changed";
       
  1007 		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {
       
  1008 			$results = $wpdb->get_results( $query );
       
  1009 			wp_cache_set( $key, $results, 'posts' );
       
  1010 		}
       
  1011 		if ( $results ) {
       
  1012 			$afterafter = $after;
       
  1013 			foreach ( (array) $results as $result) {
       
  1014 				$url = get_year_link($result->year);
       
  1015 				$text = sprintf('%d', $result->year);
       
  1016 				if ($show_post_count)
       
  1017 					$after = '&nbsp;('.$result->posts.')' . $afterafter;
       
  1018 				$output .= get_archives_link($url, $text, $format, $before, $after);
       
  1019 			}
       
  1020 		}
       
  1021 	} elseif ( 'daily' == $type ) {
       
  1022 		$query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, DAYOFMONTH(post_date) AS `dayofmonth`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date), DAYOFMONTH(post_date) ORDER BY post_date $order $limit";
       
  1023 		$key = md5( $query );
       
  1024 		$key = "wp_get_archives:$key:$last_changed";
       
  1025 		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {
       
  1026 			$results = $wpdb->get_results( $query );
       
  1027 			$cache[ $key ] = $results;
       
  1028 			wp_cache_set( $key, $results, 'posts' );
       
  1029 		}
       
  1030 		if ( $results ) {
       
  1031 			$afterafter = $after;
       
  1032 			foreach ( (array) $results as $result ) {
       
  1033 				$url	= get_day_link($result->year, $result->month, $result->dayofmonth);
       
  1034 				$date = sprintf('%1$d-%2$02d-%3$02d 00:00:00', $result->year, $result->month, $result->dayofmonth);
       
  1035 				$text = mysql2date($archive_day_date_format, $date);
       
  1036 				if ($show_post_count)
       
  1037 					$after = '&nbsp;('.$result->posts.')'.$afterafter;
       
  1038 				$output .= get_archives_link($url, $text, $format, $before, $after);
       
  1039 			}
       
  1040 		}
       
  1041 	} elseif ( 'weekly' == $type ) {
       
  1042 		$week = _wp_mysql_week( '`post_date`' );
       
  1043 		$query = "SELECT DISTINCT $week AS `week`, YEAR( `post_date` ) AS `yr`, DATE_FORMAT( `post_date`, '%Y-%m-%d' ) AS `yyyymmdd`, count( `ID` ) AS `posts` FROM `$wpdb->posts` $join $where GROUP BY $week, YEAR( `post_date` ) ORDER BY `post_date` $order $limit";
       
  1044 		$key = md5( $query );
       
  1045 		$key = "wp_get_archives:$key:$last_changed";
       
  1046 		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {
       
  1047 			$results = $wpdb->get_results( $query );
       
  1048 			wp_cache_set( $key, $results, 'posts' );
       
  1049 		}
       
  1050 		$arc_w_last = '';
       
  1051 		$afterafter = $after;
       
  1052 		if ( $results ) {
       
  1053 				foreach ( (array) $results as $result ) {
       
  1054 					if ( $result->week != $arc_w_last ) {
       
  1055 						$arc_year = $result->yr;
       
  1056 						$arc_w_last = $result->week;
       
  1057 						$arc_week = get_weekstartend($result->yyyymmdd, get_option('start_of_week'));
       
  1058 						$arc_week_start = date_i18n($archive_week_start_date_format, $arc_week['start']);
       
  1059 						$arc_week_end = date_i18n($archive_week_end_date_format, $arc_week['end']);
       
  1060 						$url  = sprintf('%1$s/%2$s%3$sm%4$s%5$s%6$sw%7$s%8$d', home_url(), '', '?', '=', $arc_year, '&amp;', '=', $result->week);
       
  1061 						$text = $arc_week_start . $archive_week_separator . $arc_week_end;
       
  1062 						if ($show_post_count)
       
  1063 							$after = '&nbsp;('.$result->posts.')'.$afterafter;
       
  1064 						$output .= get_archives_link($url, $text, $format, $before, $after);
       
  1065 					}
       
  1066 				}
       
  1067 		}
       
  1068 	} elseif ( ( 'postbypost' == $type ) || ('alpha' == $type) ) {
       
  1069 		$orderby = ('alpha' == $type) ? 'post_title ASC ' : 'post_date DESC ';
       
  1070 		$query = "SELECT * FROM $wpdb->posts $join $where ORDER BY $orderby $limit";
       
  1071 		$key = md5( $query );
       
  1072 		$key = "wp_get_archives:$key:$last_changed";
       
  1073 		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {
       
  1074 			$results = $wpdb->get_results( $query );
       
  1075 			wp_cache_set( $key, $results, 'posts' );
       
  1076 		}
       
  1077 		if ( $results ) {
       
  1078 			foreach ( (array) $results as $result ) {
       
  1079 				if ( $result->post_date != '0000-00-00 00:00:00' ) {
       
  1080 					$url  = get_permalink( $result );
       
  1081 					if ( $result->post_title ) {
       
  1082 						/** This filter is documented in wp-includes/post-template.php */
       
  1083 						$text = strip_tags( apply_filters( 'the_title', $result->post_title, $result->ID ) );
       
  1084 					} else {
       
  1085 						$text = $result->ID;
       
  1086 					}
       
  1087 					$output .= get_archives_link($url, $text, $format, $before, $after);
       
  1088 				}
       
  1089 			}
       
  1090 		}
       
  1091 	}
       
  1092 	if ( $echo )
       
  1093 		echo $output;
       
  1094 	else
       
  1095 		return $output;
       
  1096 }
       
  1097 
       
  1098 /**
       
  1099  * Get number of days since the start of the week.
       
  1100  *
       
  1101  * @since 1.5.0
       
  1102  *
       
  1103  * @param int $num Number of day.
       
  1104  * @return int Days since the start of the week.
       
  1105  */
       
  1106 function calendar_week_mod($num) {
       
  1107 	$base = 7;
       
  1108 	return ($num - $base*floor($num/$base));
       
  1109 }
       
  1110 
       
  1111 /**
       
  1112  * Display calendar with days that have posts as links.
       
  1113  *
       
  1114  * The calendar is cached, which will be retrieved, if it exists. If there are
       
  1115  * no posts for the month, then it will not be displayed.
       
  1116  *
       
  1117  * @since 1.0.0
       
  1118  * @uses calendar_week_mod()
       
  1119  *
       
  1120  * @param bool $initial Optional, default is true. Use initial calendar names.
       
  1121  * @param bool $echo Optional, default is true. Set to false for return.
       
  1122  * @return string|null String when retrieving, null when displaying.
       
  1123  */
       
  1124 function get_calendar($initial = true, $echo = true) {
       
  1125 	global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;
       
  1126 
       
  1127 	$cache = array();
       
  1128 	$key = md5( $m . $monthnum . $year );
       
  1129 	if ( $cache = wp_cache_get( 'get_calendar', 'calendar' ) ) {
       
  1130 		if ( is_array($cache) && isset( $cache[ $key ] ) ) {
       
  1131 			if ( $echo ) {
       
  1132 				echo apply_filters( 'get_calendar',  $cache[$key] );
       
  1133 				return;
       
  1134 			} else {
       
  1135 				return apply_filters( 'get_calendar',  $cache[$key] );
       
  1136 			}
       
  1137 		}
       
  1138 	}
       
  1139 
       
  1140 	if ( !is_array($cache) )
       
  1141 		$cache = array();
       
  1142 
       
  1143 	// Quick check. If we have no posts at all, abort!
       
  1144 	if ( !$posts ) {
       
  1145 		$gotsome = $wpdb->get_var("SELECT 1 as test FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 1");
       
  1146 		if ( !$gotsome ) {
       
  1147 			$cache[ $key ] = '';
       
  1148 			wp_cache_set( 'get_calendar', $cache, 'calendar' );
       
  1149 			return;
       
  1150 		}
       
  1151 	}
       
  1152 
       
  1153 	if ( isset($_GET['w']) )
       
  1154 		$w = ''.intval($_GET['w']);
       
  1155 
       
  1156 	// week_begins = 0 stands for Sunday
       
  1157 	$week_begins = intval(get_option('start_of_week'));
       
  1158 
       
  1159 	// Let's figure out when we are
       
  1160 	if ( !empty($monthnum) && !empty($year) ) {
       
  1161 		$thismonth = ''.zeroise(intval($monthnum), 2);
       
  1162 		$thisyear = ''.intval($year);
       
  1163 	} elseif ( !empty($w) ) {
       
  1164 		// We need to get the month from MySQL
       
  1165 		$thisyear = ''.intval(substr($m, 0, 4));
       
  1166 		$d = (($w - 1) * 7) + 6; //it seems MySQL's weeks disagree with PHP's
       
  1167 		$thismonth = $wpdb->get_var("SELECT DATE_FORMAT((DATE_ADD('{$thisyear}0101', INTERVAL $d DAY) ), '%m')");
       
  1168 	} elseif ( !empty($m) ) {
       
  1169 		$thisyear = ''.intval(substr($m, 0, 4));
       
  1170 		if ( strlen($m) < 6 )
       
  1171 				$thismonth = '01';
       
  1172 		else
       
  1173 				$thismonth = ''.zeroise(intval(substr($m, 4, 2)), 2);
       
  1174 	} else {
       
  1175 		$thisyear = gmdate('Y', current_time('timestamp'));
       
  1176 		$thismonth = gmdate('m', current_time('timestamp'));
       
  1177 	}
       
  1178 
       
  1179 	$unixmonth = mktime(0, 0 , 0, $thismonth, 1, $thisyear);
       
  1180 	$last_day = date('t', $unixmonth);
       
  1181 
       
  1182 	// Get the next and previous month and year with at least one post
       
  1183 	$previous = $wpdb->get_row("SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
       
  1184 		FROM $wpdb->posts
       
  1185 		WHERE post_date < '$thisyear-$thismonth-01'
       
  1186 		AND post_type = 'post' AND post_status = 'publish'
       
  1187 			ORDER BY post_date DESC
       
  1188 			LIMIT 1");
       
  1189 	$next = $wpdb->get_row("SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
       
  1190 		FROM $wpdb->posts
       
  1191 		WHERE post_date > '$thisyear-$thismonth-{$last_day} 23:59:59'
       
  1192 		AND post_type = 'post' AND post_status = 'publish'
       
  1193 			ORDER BY post_date ASC
       
  1194 			LIMIT 1");
       
  1195 
       
  1196 	/* translators: Calendar caption: 1: month name, 2: 4-digit year */
       
  1197 	$calendar_caption = _x('%1$s %2$s', 'calendar caption');
       
  1198 	$calendar_output = '<table id="wp-calendar">
       
  1199 	<caption>' . sprintf($calendar_caption, $wp_locale->get_month($thismonth), date('Y', $unixmonth)) . '</caption>
       
  1200 	<thead>
       
  1201 	<tr>';
       
  1202 
       
  1203 	$myweek = array();
       
  1204 
       
  1205 	for ( $wdcount=0; $wdcount<=6; $wdcount++ ) {
       
  1206 		$myweek[] = $wp_locale->get_weekday(($wdcount+$week_begins)%7);
       
  1207 	}
       
  1208 
       
  1209 	foreach ( $myweek as $wd ) {
       
  1210 		$day_name = (true == $initial) ? $wp_locale->get_weekday_initial($wd) : $wp_locale->get_weekday_abbrev($wd);
       
  1211 		$wd = esc_attr($wd);
       
  1212 		$calendar_output .= "\n\t\t<th scope=\"col\" title=\"$wd\">$day_name</th>";
       
  1213 	}
       
  1214 
       
  1215 	$calendar_output .= '
       
  1216 	</tr>
       
  1217 	</thead>
       
  1218 
       
  1219 	<tfoot>
       
  1220 	<tr>';
       
  1221 
       
  1222 	if ( $previous ) {
       
  1223 		$calendar_output .= "\n\t\t".'<td colspan="3" id="prev"><a href="' . get_month_link($previous->year, $previous->month) . '" title="' . esc_attr( sprintf(__('View posts for %1$s %2$s'), $wp_locale->get_month($previous->month), date('Y', mktime(0, 0 , 0, $previous->month, 1, $previous->year)))) . '">&laquo; ' . $wp_locale->get_month_abbrev($wp_locale->get_month($previous->month)) . '</a></td>';
       
  1224 	} else {
       
  1225 		$calendar_output .= "\n\t\t".'<td colspan="3" id="prev" class="pad">&nbsp;</td>';
       
  1226 	}
       
  1227 
       
  1228 	$calendar_output .= "\n\t\t".'<td class="pad">&nbsp;</td>';
       
  1229 
       
  1230 	if ( $next ) {
       
  1231 		$calendar_output .= "\n\t\t".'<td colspan="3" id="next"><a href="' . get_month_link($next->year, $next->month) . '" title="' . esc_attr( sprintf(__('View posts for %1$s %2$s'), $wp_locale->get_month($next->month), date('Y', mktime(0, 0 , 0, $next->month, 1, $next->year))) ) . '">' . $wp_locale->get_month_abbrev($wp_locale->get_month($next->month)) . ' &raquo;</a></td>';
       
  1232 	} else {
       
  1233 		$calendar_output .= "\n\t\t".'<td colspan="3" id="next" class="pad">&nbsp;</td>';
       
  1234 	}
       
  1235 
       
  1236 	$calendar_output .= '
       
  1237 	</tr>
       
  1238 	</tfoot>
       
  1239 
       
  1240 	<tbody>
       
  1241 	<tr>';
       
  1242 
       
  1243 	// Get days with posts
       
  1244 	$dayswithposts = $wpdb->get_results("SELECT DISTINCT DAYOFMONTH(post_date)
       
  1245 		FROM $wpdb->posts WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00'
       
  1246 		AND post_type = 'post' AND post_status = 'publish'
       
  1247 		AND post_date <= '{$thisyear}-{$thismonth}-{$last_day} 23:59:59'", ARRAY_N);
       
  1248 	if ( $dayswithposts ) {
       
  1249 		foreach ( (array) $dayswithposts as $daywith ) {
       
  1250 			$daywithpost[] = $daywith[0];
       
  1251 		}
       
  1252 	} else {
       
  1253 		$daywithpost = array();
       
  1254 	}
       
  1255 
       
  1256 	if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false || stripos($_SERVER['HTTP_USER_AGENT'], 'camino') !== false || stripos($_SERVER['HTTP_USER_AGENT'], 'safari') !== false)
       
  1257 		$ak_title_separator = "\n";
       
  1258 	else
       
  1259 		$ak_title_separator = ', ';
       
  1260 
       
  1261 	$ak_titles_for_day = array();
       
  1262 	$ak_post_titles = $wpdb->get_results("SELECT ID, post_title, DAYOFMONTH(post_date) as dom "
       
  1263 		."FROM $wpdb->posts "
       
  1264 		."WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00' "
       
  1265 		."AND post_date <= '{$thisyear}-{$thismonth}-{$last_day} 23:59:59' "
       
  1266 		."AND post_type = 'post' AND post_status = 'publish'"
       
  1267 	);
       
  1268 	if ( $ak_post_titles ) {
       
  1269 		foreach ( (array) $ak_post_titles as $ak_post_title ) {
       
  1270 
       
  1271 				/** This filter is documented in wp-includes/post-template.php */
       
  1272 				$post_title = esc_attr( apply_filters( 'the_title', $ak_post_title->post_title, $ak_post_title->ID ) );
       
  1273 
       
  1274 				if ( empty($ak_titles_for_day['day_'.$ak_post_title->dom]) )
       
  1275 					$ak_titles_for_day['day_'.$ak_post_title->dom] = '';
       
  1276 				if ( empty($ak_titles_for_day["$ak_post_title->dom"]) ) // first one
       
  1277 					$ak_titles_for_day["$ak_post_title->dom"] = $post_title;
       
  1278 				else
       
  1279 					$ak_titles_for_day["$ak_post_title->dom"] .= $ak_title_separator . $post_title;
       
  1280 		}
       
  1281 	}
       
  1282 
       
  1283 	// See how much we should pad in the beginning
       
  1284 	$pad = calendar_week_mod(date('w', $unixmonth)-$week_begins);
       
  1285 	if ( 0 != $pad )
       
  1286 		$calendar_output .= "\n\t\t".'<td colspan="'. esc_attr($pad) .'" class="pad">&nbsp;</td>';
       
  1287 
       
  1288 	$daysinmonth = intval(date('t', $unixmonth));
       
  1289 	for ( $day = 1; $day <= $daysinmonth; ++$day ) {
       
  1290 		if ( isset($newrow) && $newrow )
       
  1291 			$calendar_output .= "\n\t</tr>\n\t<tr>\n\t\t";
       
  1292 		$newrow = false;
       
  1293 
       
  1294 		if ( $day == gmdate('j', current_time('timestamp')) && $thismonth == gmdate('m', current_time('timestamp')) && $thisyear == gmdate('Y', current_time('timestamp')) )
       
  1295 			$calendar_output .= '<td id="today">';
       
  1296 		else
       
  1297 			$calendar_output .= '<td>';
       
  1298 
       
  1299 		if ( in_array($day, $daywithpost) ) // any posts today?
       
  1300 				$calendar_output .= '<a href="' . get_day_link( $thisyear, $thismonth, $day ) . '" title="' . esc_attr( $ak_titles_for_day[ $day ] ) . "\">$day</a>";
       
  1301 		else
       
  1302 			$calendar_output .= $day;
       
  1303 		$calendar_output .= '</td>';
       
  1304 
       
  1305 		if ( 6 == calendar_week_mod(date('w', mktime(0, 0 , 0, $thismonth, $day, $thisyear))-$week_begins) )
       
  1306 			$newrow = true;
       
  1307 	}
       
  1308 
       
  1309 	$pad = 7 - calendar_week_mod(date('w', mktime(0, 0 , 0, $thismonth, $day, $thisyear))-$week_begins);
       
  1310 	if ( $pad != 0 && $pad != 7 )
       
  1311 		$calendar_output .= "\n\t\t".'<td class="pad" colspan="'. esc_attr($pad) .'">&nbsp;</td>';
       
  1312 
       
  1313 	$calendar_output .= "\n\t</tr>\n\t</tbody>\n\t</table>";
       
  1314 
       
  1315 	$cache[ $key ] = $calendar_output;
       
  1316 	wp_cache_set( 'get_calendar', $cache, 'calendar' );
       
  1317 
       
  1318 	if ( $echo )
       
  1319 		echo apply_filters( 'get_calendar',  $calendar_output );
       
  1320 	else
       
  1321 		return apply_filters( 'get_calendar',  $calendar_output );
       
  1322 
       
  1323 }
       
  1324 
       
  1325 /**
       
  1326  * Purge the cached results of get_calendar.
       
  1327  *
       
  1328  * @see get_calendar
       
  1329  * @since 2.1.0
       
  1330  */
       
  1331 function delete_get_calendar_cache() {
       
  1332 	wp_cache_delete( 'get_calendar', 'calendar' );
       
  1333 }
       
  1334 add_action( 'save_post', 'delete_get_calendar_cache' );
       
  1335 add_action( 'delete_post', 'delete_get_calendar_cache' );
       
  1336 add_action( 'update_option_start_of_week', 'delete_get_calendar_cache' );
       
  1337 add_action( 'update_option_gmt_offset', 'delete_get_calendar_cache' );
       
  1338 
       
  1339 /**
       
  1340  * Display all of the allowed tags in HTML format with attributes.
       
  1341  *
       
  1342  * This is useful for displaying in the comment area, which elements and
       
  1343  * attributes are supported. As well as any plugins which want to display it.
       
  1344  *
       
  1345  * @since 1.0.1
       
  1346  * @uses $allowedtags
       
  1347  *
       
  1348  * @return string HTML allowed tags entity encoded.
       
  1349  */
       
  1350 function allowed_tags() {
       
  1351 	global $allowedtags;
       
  1352 	$allowed = '';
       
  1353 	foreach ( (array) $allowedtags as $tag => $attributes ) {
       
  1354 		$allowed .= '<'.$tag;
       
  1355 		if ( 0 < count($attributes) ) {
       
  1356 			foreach ( $attributes as $attribute => $limits ) {
       
  1357 				$allowed .= ' '.$attribute.'=""';
       
  1358 			}
       
  1359 		}
       
  1360 		$allowed .= '> ';
       
  1361 	}
       
  1362 	return htmlentities($allowed);
       
  1363 }
       
  1364 
       
  1365 /***** Date/Time tags *****/
       
  1366 
       
  1367 /**
       
  1368  * Outputs the date in iso8601 format for xml files.
       
  1369  *
       
  1370  * @since 1.0.0
       
  1371  */
       
  1372 function the_date_xml() {
       
  1373 	echo mysql2date( 'Y-m-d', get_post()->post_date, false );
       
  1374 }
       
  1375 
       
  1376 /**
       
  1377  * Display or Retrieve the date the current $post was written (once per date)
       
  1378  *
       
  1379  * Will only output the date if the current post's date is different from the
       
  1380  * previous one output.
       
  1381  *
       
  1382  * i.e. Only one date listing will show per day worth of posts shown in the loop, even if the
       
  1383  * function is called several times for each post.
       
  1384  *
       
  1385  * HTML output can be filtered with 'the_date'.
       
  1386  * Date string output can be filtered with 'get_the_date'.
       
  1387  *
       
  1388  * @since 0.71
       
  1389  * @uses get_the_date()
       
  1390  * @param string $d Optional. PHP date format defaults to the date_format option if not specified.
       
  1391  * @param string $before Optional. Output before the date.
       
  1392  * @param string $after Optional. Output after the date.
       
  1393  * @param bool $echo Optional, default is display. Whether to echo the date or return it.
       
  1394  * @return string|null Null if displaying, string if retrieving.
       
  1395  */
       
  1396 function the_date( $d = '', $before = '', $after = '', $echo = true ) {
       
  1397 	global $currentday, $previousday;
       
  1398 	$the_date = '';
       
  1399 	if ( $currentday != $previousday ) {
       
  1400 		$the_date .= $before;
       
  1401 		$the_date .= get_the_date( $d );
       
  1402 		$the_date .= $after;
       
  1403 		$previousday = $currentday;
       
  1404 
       
  1405 		$the_date = apply_filters('the_date', $the_date, $d, $before, $after);
       
  1406 
       
  1407 		if ( $echo )
       
  1408 			echo $the_date;
       
  1409 		else
       
  1410 			return $the_date;
       
  1411 	}
       
  1412 
       
  1413 	return null;
       
  1414 }
       
  1415 
       
  1416 /**
       
  1417  * Retrieve the date the current $post was written.
       
  1418  *
       
  1419  * Unlike the_date() this function will always return the date.
       
  1420  * Modify output with 'get_the_date' filter.
       
  1421  *
       
  1422  * @since 3.0.0
       
  1423  *
       
  1424  * @param string $d Optional. PHP date format defaults to the date_format option if not specified.
       
  1425  * @return string|null Null if displaying, string if retrieving.
       
  1426  */
       
  1427 function get_the_date( $d = '' ) {
       
  1428 	$post = get_post();
       
  1429 	$the_date = '';
       
  1430 
       
  1431 	if ( '' == $d )
       
  1432 		$the_date .= mysql2date(get_option('date_format'), $post->post_date);
       
  1433 	else
       
  1434 		$the_date .= mysql2date($d, $post->post_date);
       
  1435 
       
  1436 	return apply_filters('get_the_date', $the_date, $d);
       
  1437 }
       
  1438 
       
  1439 /**
       
  1440  * Display the date on which the post was last modified.
       
  1441  *
       
  1442  * @since 2.1.0
       
  1443  *
       
  1444  * @param string $d Optional. PHP date format defaults to the date_format option if not specified.
       
  1445  * @param string $before Optional. Output before the date.
       
  1446  * @param string $after Optional. Output after the date.
       
  1447  * @param bool $echo Optional, default is display. Whether to echo the date or return it.
       
  1448  * @return string|null Null if displaying, string if retrieving.
       
  1449  */
       
  1450 function the_modified_date($d = '', $before='', $after='', $echo = true) {
       
  1451 
       
  1452 	$the_modified_date = $before . get_the_modified_date($d) . $after;
       
  1453 	$the_modified_date = apply_filters('the_modified_date', $the_modified_date, $d, $before, $after);
       
  1454 
       
  1455 	if ( $echo )
       
  1456 		echo $the_modified_date;
       
  1457 	else
       
  1458 		return $the_modified_date;
       
  1459 
       
  1460 }
       
  1461 
       
  1462 /**
       
  1463  * Retrieve the date on which the post was last modified.
       
  1464  *
       
  1465  * @since 2.1.0
       
  1466  *
       
  1467  * @param string $d Optional. PHP date format. Defaults to the "date_format" option
       
  1468  * @return string
       
  1469  */
       
  1470 function get_the_modified_date($d = '') {
       
  1471 	if ( '' == $d )
       
  1472 		$the_time = get_post_modified_time(get_option('date_format'), null, null, true);
       
  1473 	else
       
  1474 		$the_time = get_post_modified_time($d, null, null, true);
       
  1475 	return apply_filters('get_the_modified_date', $the_time, $d);
       
  1476 }
       
  1477 
       
  1478 /**
       
  1479  * Display the time at which the post was written.
       
  1480  *
       
  1481  * @since 0.71
       
  1482  *
       
  1483  * @param string $d Either 'G', 'U', or php date format.
       
  1484  */
       
  1485 function the_time( $d = '' ) {
       
  1486 	echo apply_filters('the_time', get_the_time( $d ), $d);
       
  1487 }
       
  1488 
       
  1489 /**
       
  1490  * Retrieve the time at which the post was written.
       
  1491  *
       
  1492  * @since 1.5.0
       
  1493  *
       
  1494  * @param string $d Optional Either 'G', 'U', or php date format defaults to the value specified in the time_format option.
       
  1495  * @param int|object $post Optional post ID or object. Default is global $post object.
       
  1496  * @return string
       
  1497  */
       
  1498 function get_the_time( $d = '', $post = null ) {
       
  1499 	$post = get_post($post);
       
  1500 
       
  1501 	if ( '' == $d )
       
  1502 		$the_time = get_post_time(get_option('time_format'), false, $post, true);
       
  1503 	else
       
  1504 		$the_time = get_post_time($d, false, $post, true);
       
  1505 	return apply_filters('get_the_time', $the_time, $d, $post);
       
  1506 }
       
  1507 
       
  1508 /**
       
  1509  * Retrieve the time at which the post was written.
       
  1510  *
       
  1511  * @since 2.0.0
       
  1512  *
       
  1513  * @param string $d Optional Either 'G', 'U', or php date format.
       
  1514  * @param bool $gmt Optional, default is false. Whether to return the gmt time.
       
  1515  * @param int|object $post Optional post ID or object. Default is global $post object.
       
  1516  * @param bool $translate Whether to translate the time string
       
  1517  * @return string
       
  1518  */
       
  1519 function get_post_time( $d = 'U', $gmt = false, $post = null, $translate = false ) { // returns timestamp
       
  1520 	$post = get_post($post);
       
  1521 
       
  1522 	if ( $gmt )
       
  1523 		$time = $post->post_date_gmt;
       
  1524 	else
       
  1525 		$time = $post->post_date;
       
  1526 
       
  1527 	$time = mysql2date($d, $time, $translate);
       
  1528 	return apply_filters('get_post_time', $time, $d, $gmt);
       
  1529 }
       
  1530 
       
  1531 /**
       
  1532  * Display the time at which the post was last modified.
       
  1533  *
       
  1534  * @since 2.0.0
       
  1535  *
       
  1536  * @param string $d Optional Either 'G', 'U', or php date format defaults to the value specified in the time_format option.
       
  1537  */
       
  1538 function the_modified_time($d = '') {
       
  1539 	echo apply_filters('the_modified_time', get_the_modified_time($d), $d);
       
  1540 }
       
  1541 
       
  1542 /**
       
  1543  * Retrieve the time at which the post was last modified.
       
  1544  *
       
  1545  * @since 2.0.0
       
  1546  *
       
  1547  * @param string $d Optional Either 'G', 'U', or php date format defaults to the value specified in the time_format option.
       
  1548  * @return string
       
  1549  */
       
  1550 function get_the_modified_time($d = '') {
       
  1551 	if ( '' == $d )
       
  1552 		$the_time = get_post_modified_time(get_option('time_format'), null, null, true);
       
  1553 	else
       
  1554 		$the_time = get_post_modified_time($d, null, null, true);
       
  1555 	return apply_filters('get_the_modified_time', $the_time, $d);
       
  1556 }
       
  1557 
       
  1558 /**
       
  1559  * Retrieve the time at which the post was last modified.
       
  1560  *
       
  1561  * @since 2.0.0
       
  1562  *
       
  1563  * @param string $d Optional, default is 'U'. Either 'G', 'U', or php date format.
       
  1564  * @param bool $gmt Optional, default is false. Whether to return the gmt time.
       
  1565  * @param int|object $post Optional, default is global post object. A post_id or post object
       
  1566  * @param bool $translate Optional, default is false. Whether to translate the result
       
  1567  * @return string Returns timestamp
       
  1568  */
       
  1569 function get_post_modified_time( $d = 'U', $gmt = false, $post = null, $translate = false ) {
       
  1570 	$post = get_post($post);
       
  1571 
       
  1572 	if ( $gmt )
       
  1573 		$time = $post->post_modified_gmt;
       
  1574 	else
       
  1575 		$time = $post->post_modified;
       
  1576 	$time = mysql2date($d, $time, $translate);
       
  1577 
       
  1578 	return apply_filters('get_post_modified_time', $time, $d, $gmt);
       
  1579 }
       
  1580 
       
  1581 /**
       
  1582  * Display the weekday on which the post was written.
       
  1583  *
       
  1584  * @since 0.71
       
  1585  * @uses $wp_locale
       
  1586  * @uses $post
       
  1587  */
       
  1588 function the_weekday() {
       
  1589 	global $wp_locale;
       
  1590 	$the_weekday = $wp_locale->get_weekday( mysql2date( 'w', get_post()->post_date, false ) );
       
  1591 	$the_weekday = apply_filters('the_weekday', $the_weekday);
       
  1592 	echo $the_weekday;
       
  1593 }
       
  1594 
       
  1595 /**
       
  1596  * Display the weekday on which the post was written.
       
  1597  *
       
  1598  * Will only output the weekday if the current post's weekday is different from
       
  1599  * the previous one output.
       
  1600  *
       
  1601  * @since 0.71
       
  1602  *
       
  1603  * @param string $before Optional Output before the date.
       
  1604  * @param string $after Optional Output after the date.
       
  1605  */
       
  1606 function the_weekday_date($before='',$after='') {
       
  1607 	global $wp_locale, $currentday, $previousweekday;
       
  1608 	$the_weekday_date = '';
       
  1609 	if ( $currentday != $previousweekday ) {
       
  1610 		$the_weekday_date .= $before;
       
  1611 		$the_weekday_date .= $wp_locale->get_weekday( mysql2date( 'w', get_post()->post_date, false ) );
       
  1612 		$the_weekday_date .= $after;
       
  1613 		$previousweekday = $currentday;
       
  1614 	}
       
  1615 	$the_weekday_date = apply_filters('the_weekday_date', $the_weekday_date, $before, $after);
       
  1616 	echo $the_weekday_date;
       
  1617 }
       
  1618 
       
  1619 /**
       
  1620  * Fire the wp_head action
       
  1621  *
       
  1622  * @since 1.2.0
       
  1623  * @uses do_action() Calls 'wp_head' hook.
       
  1624  */
       
  1625 function wp_head() {
       
  1626 	do_action('wp_head');
       
  1627 }
       
  1628 
       
  1629 /**
       
  1630  * Fire the wp_footer action
       
  1631  *
       
  1632  * @since 1.5.1
       
  1633  * @uses do_action() Calls 'wp_footer' hook.
       
  1634  */
       
  1635 function wp_footer() {
       
  1636 	do_action('wp_footer');
       
  1637 }
       
  1638 
       
  1639 /**
       
  1640  * Display the links to the general feeds.
       
  1641  *
       
  1642  * @since 2.8.0
       
  1643  *
       
  1644  * @param array $args Optional arguments.
       
  1645  */
       
  1646 function feed_links( $args = array() ) {
       
  1647 	if ( !current_theme_supports('automatic-feed-links') )
       
  1648 		return;
       
  1649 
       
  1650 	$defaults = array(
       
  1651 		/* translators: Separator between blog name and feed type in feed links */
       
  1652 		'separator'	=> _x('&raquo;', 'feed link'),
       
  1653 		/* translators: 1: blog title, 2: separator (raquo) */
       
  1654 		'feedtitle'	=> __('%1$s %2$s Feed'),
       
  1655 		/* translators: 1: blog title, 2: separator (raquo) */
       
  1656 		'comstitle'	=> __('%1$s %2$s Comments Feed'),
       
  1657 	);
       
  1658 
       
  1659 	$args = wp_parse_args( $args, $defaults );
       
  1660 
       
  1661 	echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( sprintf( $args['feedtitle'], get_bloginfo('name'), $args['separator'] ) ) . '" href="' . esc_url( get_feed_link() ) . "\" />\n";
       
  1662 	echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( sprintf( $args['comstitle'], get_bloginfo('name'), $args['separator'] ) ) . '" href="' . esc_url( get_feed_link( 'comments_' . get_default_feed() ) ) . "\" />\n";
       
  1663 }
       
  1664 
       
  1665 /**
       
  1666  * Display the links to the extra feeds such as category feeds.
       
  1667  *
       
  1668  * @since 2.8.0
       
  1669  *
       
  1670  * @param array $args Optional arguments.
       
  1671  */
       
  1672 function feed_links_extra( $args = array() ) {
       
  1673 	$defaults = array(
       
  1674 		/* translators: Separator between blog name and feed type in feed links */
       
  1675 		'separator'   => _x('&raquo;', 'feed link'),
       
  1676 		/* translators: 1: blog name, 2: separator(raquo), 3: post title */
       
  1677 		'singletitle' => __('%1$s %2$s %3$s Comments Feed'),
       
  1678 		/* translators: 1: blog name, 2: separator(raquo), 3: category name */
       
  1679 		'cattitle'    => __('%1$s %2$s %3$s Category Feed'),
       
  1680 		/* translators: 1: blog name, 2: separator(raquo), 3: tag name */
       
  1681 		'tagtitle'    => __('%1$s %2$s %3$s Tag Feed'),
       
  1682 		/* translators: 1: blog name, 2: separator(raquo), 3: author name  */
       
  1683 		'authortitle' => __('%1$s %2$s Posts by %3$s Feed'),
       
  1684 		/* translators: 1: blog name, 2: separator(raquo), 3: search phrase */
       
  1685 		'searchtitle' => __('%1$s %2$s Search Results for &#8220;%3$s&#8221; Feed'),
       
  1686 		/* translators: 1: blog name, 2: separator(raquo), 3: post type name */
       
  1687 		'posttypetitle' => __('%1$s %2$s %3$s Feed'),
       
  1688 	);
       
  1689 
       
  1690 	$args = wp_parse_args( $args, $defaults );
       
  1691 
       
  1692 	if ( is_singular() ) {
       
  1693 		$id = 0;
       
  1694 		$post = get_post( $id );
       
  1695 
       
  1696 		if ( comments_open() || pings_open() || $post->comment_count > 0 ) {
       
  1697 			$title = sprintf( $args['singletitle'], get_bloginfo('name'), $args['separator'], esc_html( get_the_title() ) );
       
  1698 			$href = get_post_comments_feed_link( $post->ID );
       
  1699 		}
       
  1700 	} elseif ( is_post_type_archive() ) {
       
  1701 		$post_type = get_query_var( 'post_type' );
       
  1702 		if ( is_array( $post_type ) )
       
  1703 			$post_type = reset( $post_type );
       
  1704 
       
  1705 		$post_type_obj = get_post_type_object( $post_type );
       
  1706 		$title = sprintf( $args['posttypetitle'], get_bloginfo( 'name' ), $args['separator'], $post_type_obj->labels->name );
       
  1707 		$href = get_post_type_archive_feed_link( $post_type_obj->name );
       
  1708 	} elseif ( is_category() ) {
       
  1709 		$term = get_queried_object();
       
  1710 
       
  1711 		if ( $term ) {
       
  1712 			$title = sprintf( $args['cattitle'], get_bloginfo('name'), $args['separator'], $term->name );
       
  1713 			$href = get_category_feed_link( $term->term_id );
       
  1714 		}
       
  1715 	} elseif ( is_tag() ) {
       
  1716 		$term = get_queried_object();
       
  1717 
       
  1718 		if ( $term ) {
       
  1719 			$title = sprintf( $args['tagtitle'], get_bloginfo('name'), $args['separator'], $term->name );
       
  1720 			$href = get_tag_feed_link( $term->term_id );
       
  1721 		}
       
  1722 	} elseif ( is_author() ) {
       
  1723 		$author_id = intval( get_query_var('author') );
       
  1724 
       
  1725 		$title = sprintf( $args['authortitle'], get_bloginfo('name'), $args['separator'], get_the_author_meta( 'display_name', $author_id ) );
       
  1726 		$href = get_author_feed_link( $author_id );
       
  1727 	} elseif ( is_search() ) {
       
  1728 		$title = sprintf( $args['searchtitle'], get_bloginfo('name'), $args['separator'], get_search_query( false ) );
       
  1729 		$href = get_search_feed_link();
       
  1730 	} elseif ( is_post_type_archive() ) {
       
  1731 		$title = sprintf( $args['posttypetitle'], get_bloginfo('name'), $args['separator'], post_type_archive_title( '', false ) );
       
  1732 		$post_type_obj = get_queried_object();
       
  1733 		if ( $post_type_obj )
       
  1734 			$href = get_post_type_archive_feed_link( $post_type_obj->name );
       
  1735 	}
       
  1736 
       
  1737 	if ( isset($title) && isset($href) )
       
  1738 		echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( $title ) . '" href="' . esc_url( $href ) . '" />' . "\n";
       
  1739 }
       
  1740 
       
  1741 /**
       
  1742  * Display the link to the Really Simple Discovery service endpoint.
       
  1743  *
       
  1744  * @link http://archipelago.phrasewise.com/rsd
       
  1745  * @since 2.0.0
       
  1746  */
       
  1747 function rsd_link() {
       
  1748 	echo '<link rel="EditURI" type="application/rsd+xml" title="RSD" href="' . get_bloginfo('wpurl') . "/xmlrpc.php?rsd\" />\n";
       
  1749 }
       
  1750 
       
  1751 /**
       
  1752  * Display the link to the Windows Live Writer manifest file.
       
  1753  *
       
  1754  * @link http://msdn.microsoft.com/en-us/library/bb463265.aspx
       
  1755  * @since 2.3.1
       
  1756  */
       
  1757 function wlwmanifest_link() {
       
  1758 	echo '<link rel="wlwmanifest" type="application/wlwmanifest+xml" href="'
       
  1759 		. get_bloginfo('wpurl') . '/wp-includes/wlwmanifest.xml" /> ' . "\n";
       
  1760 }
       
  1761 
       
  1762 /**
       
  1763  * Display a noindex meta tag if required by the blog configuration.
       
  1764  *
       
  1765  * If a blog is marked as not being public then the noindex meta tag will be
       
  1766  * output to tell web robots not to index the page content. Add this to the wp_head action.
       
  1767  * Typical usage is as a wp_head callback. add_action( 'wp_head', 'noindex' );
       
  1768  *
       
  1769  * @see wp_no_robots
       
  1770  *
       
  1771  * @since 2.1.0
       
  1772  */
       
  1773 function noindex() {
       
  1774 	// If the blog is not public, tell robots to go away.
       
  1775 	if ( '0' == get_option('blog_public') )
       
  1776 		wp_no_robots();
       
  1777 }
       
  1778 
       
  1779 /**
       
  1780  * Display a noindex meta tag.
       
  1781  *
       
  1782  * Outputs a noindex meta tag that tells web robots not to index the page content.
       
  1783  * Typical usage is as a wp_head callback. add_action( 'wp_head', 'wp_no_robots' );
       
  1784  *
       
  1785  * @since 3.3.0
       
  1786  */
       
  1787 function wp_no_robots() {
       
  1788 	echo "<meta name='robots' content='noindex,nofollow' />\n";
       
  1789 }
       
  1790 
       
  1791 /**
       
  1792  * Determine if TinyMCE is available.
       
  1793  *
       
  1794  * Checks to see if the user has deleted the tinymce files to slim down there WordPress install.
       
  1795  *
       
  1796  * @since 2.1.0
       
  1797  *
       
  1798  * @return bool Whether TinyMCE exists.
       
  1799  */
       
  1800 function rich_edit_exists() {
       
  1801 	global $wp_rich_edit_exists;
       
  1802 	if ( !isset($wp_rich_edit_exists) )
       
  1803 		$wp_rich_edit_exists = file_exists(ABSPATH . WPINC . '/js/tinymce/tiny_mce.js');
       
  1804 	return $wp_rich_edit_exists;
       
  1805 }
       
  1806 
       
  1807 /**
       
  1808  * Whether the user should have a WYSIWIG editor.
       
  1809  *
       
  1810  * Checks that the user requires a WYSIWIG editor and that the editor is
       
  1811  * supported in the users browser.
       
  1812  *
       
  1813  * @since 2.0.0
       
  1814  *
       
  1815  * @return bool
       
  1816  */
       
  1817 function user_can_richedit() {
       
  1818 	global $wp_rich_edit, $is_gecko, $is_opera, $is_safari, $is_chrome, $is_IE;
       
  1819 
       
  1820 	if ( !isset($wp_rich_edit) ) {
       
  1821 		$wp_rich_edit = false;
       
  1822 
       
  1823 		if ( get_user_option( 'rich_editing' ) == 'true' || ! is_user_logged_in() ) { // default to 'true' for logged out users
       
  1824 			if ( $is_safari ) {
       
  1825 				$wp_rich_edit = ! wp_is_mobile() || ( preg_match( '!AppleWebKit/(\d+)!', $_SERVER['HTTP_USER_AGENT'], $match ) && intval( $match[1] ) >= 534 );
       
  1826 			} elseif ( $is_gecko || $is_chrome || $is_IE || ( $is_opera && !wp_is_mobile() ) ) {
       
  1827 				$wp_rich_edit = true;
       
  1828 			}
       
  1829 		}
       
  1830 	}
       
  1831 
       
  1832 	return apply_filters('user_can_richedit', $wp_rich_edit);
       
  1833 }
       
  1834 
       
  1835 /**
       
  1836  * Find out which editor should be displayed by default.
       
  1837  *
       
  1838  * Works out which of the two editors to display as the current editor for a
       
  1839  * user. The 'html' setting is for the "Text" editor tab.
       
  1840  *
       
  1841  * @since 2.5.0
       
  1842  *
       
  1843  * @return string Either 'tinymce', or 'html', or 'test'
       
  1844  */
       
  1845 function wp_default_editor() {
       
  1846 	$r = user_can_richedit() ? 'tinymce' : 'html'; // defaults
       
  1847 	if ( $user = wp_get_current_user() ) { // look for cookie
       
  1848 		$ed = get_user_setting('editor', 'tinymce');
       
  1849 		$r = ( in_array($ed, array('tinymce', 'html', 'test') ) ) ? $ed : $r;
       
  1850 	}
       
  1851 	return apply_filters( 'wp_default_editor', $r ); // filter
       
  1852 }
       
  1853 
       
  1854 /**
       
  1855  * Renders an editor.
       
  1856  *
       
  1857  * Using this function is the proper way to output all needed components for both TinyMCE and Quicktags.
       
  1858  * _WP_Editors should not be used directly. See http://core.trac.wordpress.org/ticket/17144.
       
  1859  *
       
  1860  * NOTE: Once initialized the TinyMCE editor cannot be safely moved in the DOM. For that reason
       
  1861  * running wp_editor() inside of a metabox is not a good idea unless only Quicktags is used.
       
  1862  * On the post edit screen several actions can be used to include additional editors
       
  1863  * containing TinyMCE: 'edit_page_form', 'edit_form_advanced' and 'dbx_post_sidebar'.
       
  1864  * See http://core.trac.wordpress.org/ticket/19173 for more information.
       
  1865  *
       
  1866  * @see wp-includes/class-wp-editor.php
       
  1867  * @since 3.3.0
       
  1868  *
       
  1869  * @param string $content Initial content for the editor.
       
  1870  * @param string $editor_id HTML ID attribute value for the textarea and TinyMCE. Can only be /[a-z]+/.
       
  1871  * @param array $settings See _WP_Editors::editor().
       
  1872  */
       
  1873 function wp_editor( $content, $editor_id, $settings = array() ) {
       
  1874 	if ( ! class_exists( '_WP_Editors' ) )
       
  1875 		require( ABSPATH . WPINC . '/class-wp-editor.php' );
       
  1876 
       
  1877 	_WP_Editors::editor($content, $editor_id, $settings);
       
  1878 }
       
  1879 
       
  1880 /**
       
  1881  * Retrieve the contents of the search WordPress query variable.
       
  1882  *
       
  1883  * The search query string is passed through {@link esc_attr()}
       
  1884  * to ensure that it is safe for placing in an html attribute.
       
  1885  *
       
  1886  * @since 2.3.0
       
  1887  * @uses esc_attr()
       
  1888  *
       
  1889  * @param bool $escaped Whether the result is escaped. Default true.
       
  1890  * 	Only use when you are later escaping it. Do not use unescaped.
       
  1891  * @return string
       
  1892  */
       
  1893 function get_search_query( $escaped = true ) {
       
  1894 	$query = apply_filters( 'get_search_query', get_query_var( 's' ) );
       
  1895 	if ( $escaped )
       
  1896 		$query = esc_attr( $query );
       
  1897 	return $query;
       
  1898 }
       
  1899 
       
  1900 /**
       
  1901  * Display the contents of the search query variable.
       
  1902  *
       
  1903  * The search query string is passed through {@link esc_attr()}
       
  1904  * to ensure that it is safe for placing in an html attribute.
       
  1905  *
       
  1906  * @uses esc_attr()
       
  1907  * @since 2.1.0
       
  1908  */
       
  1909 function the_search_query() {
       
  1910 	echo esc_attr( apply_filters( 'the_search_query', get_search_query( false ) ) );
       
  1911 }
       
  1912 
       
  1913 /**
       
  1914  * Display the language attributes for the html tag.
       
  1915  *
       
  1916  * Builds up a set of html attributes containing the text direction and language
       
  1917  * information for the page.
       
  1918  *
       
  1919  * @since 2.1.0
       
  1920  *
       
  1921  * @param string $doctype The type of html document (xhtml|html).
       
  1922  */
       
  1923 function language_attributes($doctype = 'html') {
       
  1924 	$attributes = array();
       
  1925 	$output = '';
       
  1926 
       
  1927 	if ( function_exists( 'is_rtl' ) && is_rtl() )
       
  1928 		$attributes[] = 'dir="rtl"';
       
  1929 
       
  1930 	if ( $lang = get_bloginfo('language') ) {
       
  1931 		if ( get_option('html_type') == 'text/html' || $doctype == 'html' )
       
  1932 			$attributes[] = "lang=\"$lang\"";
       
  1933 
       
  1934 		if ( get_option('html_type') != 'text/html' || $doctype == 'xhtml' )
       
  1935 			$attributes[] = "xml:lang=\"$lang\"";
       
  1936 	}
       
  1937 
       
  1938 	$output = implode(' ', $attributes);
       
  1939 	$output = apply_filters('language_attributes', $output);
       
  1940 	echo $output;
       
  1941 }
       
  1942 
       
  1943 /**
       
  1944  * Retrieve paginated link for archive post pages.
       
  1945  *
       
  1946  * Technically, the function can be used to create paginated link list for any
       
  1947  * area. The 'base' argument is used to reference the url, which will be used to
       
  1948  * create the paginated links. The 'format' argument is then used for replacing
       
  1949  * the page number. It is however, most likely and by default, to be used on the
       
  1950  * archive post pages.
       
  1951  *
       
  1952  * The 'type' argument controls format of the returned value. The default is
       
  1953  * 'plain', which is just a string with the links separated by a newline
       
  1954  * character. The other possible values are either 'array' or 'list'. The
       
  1955  * 'array' value will return an array of the paginated link list to offer full
       
  1956  * control of display. The 'list' value will place all of the paginated links in
       
  1957  * an unordered HTML list.
       
  1958  *
       
  1959  * The 'total' argument is the total amount of pages and is an integer. The
       
  1960  * 'current' argument is the current page number and is also an integer.
       
  1961  *
       
  1962  * An example of the 'base' argument is "http://example.com/all_posts.php%_%"
       
  1963  * and the '%_%' is required. The '%_%' will be replaced by the contents of in
       
  1964  * the 'format' argument. An example for the 'format' argument is "?page=%#%"
       
  1965  * and the '%#%' is also required. The '%#%' will be replaced with the page
       
  1966  * number.
       
  1967  *
       
  1968  * You can include the previous and next links in the list by setting the
       
  1969  * 'prev_next' argument to true, which it is by default. You can set the
       
  1970  * previous text, by using the 'prev_text' argument. You can set the next text
       
  1971  * by setting the 'next_text' argument.
       
  1972  *
       
  1973  * If the 'show_all' argument is set to true, then it will show all of the pages
       
  1974  * instead of a short list of the pages near the current page. By default, the
       
  1975  * 'show_all' is set to false and controlled by the 'end_size' and 'mid_size'
       
  1976  * arguments. The 'end_size' argument is how many numbers on either the start
       
  1977  * and the end list edges, by default is 1. The 'mid_size' argument is how many
       
  1978  * numbers to either side of current page, but not including current page.
       
  1979  *
       
  1980  * It is possible to add query vars to the link by using the 'add_args' argument
       
  1981  * and see {@link add_query_arg()} for more information.
       
  1982  *
       
  1983  * @since 2.1.0
       
  1984  *
       
  1985  * @param string|array $args Optional. Override defaults.
       
  1986  * @return array|string String of page links or array of page links.
       
  1987  */
       
  1988 function paginate_links( $args = '' ) {
       
  1989 	$defaults = array(
       
  1990 		'base' => '%_%', // http://example.com/all_posts.php%_% : %_% is replaced by format (below)
       
  1991 		'format' => '?page=%#%', // ?page=%#% : %#% is replaced by the page number
       
  1992 		'total' => 1,
       
  1993 		'current' => 0,
       
  1994 		'show_all' => false,
       
  1995 		'prev_next' => true,
       
  1996 		'prev_text' => __('&laquo; Previous'),
       
  1997 		'next_text' => __('Next &raquo;'),
       
  1998 		'end_size' => 1,
       
  1999 		'mid_size' => 2,
       
  2000 		'type' => 'plain',
       
  2001 		'add_args' => false, // array of query args to add
       
  2002 		'add_fragment' => ''
       
  2003 	);
       
  2004 
       
  2005 	$args = wp_parse_args( $args, $defaults );
       
  2006 	extract($args, EXTR_SKIP);
       
  2007 
       
  2008 	// Who knows what else people pass in $args
       
  2009 	$total = (int) $total;
       
  2010 	if ( $total < 2 )
       
  2011 		return;
       
  2012 	$current  = (int) $current;
       
  2013 	$end_size = 0  < (int) $end_size ? (int) $end_size : 1; // Out of bounds?  Make it the default.
       
  2014 	$mid_size = 0 <= (int) $mid_size ? (int) $mid_size : 2;
       
  2015 	$add_args = is_array($add_args) ? $add_args : false;
       
  2016 	$r = '';
       
  2017 	$page_links = array();
       
  2018 	$n = 0;
       
  2019 	$dots = false;
       
  2020 
       
  2021 	if ( $prev_next && $current && 1 < $current ) :
       
  2022 		$link = str_replace('%_%', 2 == $current ? '' : $format, $base);
       
  2023 		$link = str_replace('%#%', $current - 1, $link);
       
  2024 		if ( $add_args )
       
  2025 			$link = add_query_arg( $add_args, $link );
       
  2026 		$link .= $add_fragment;
       
  2027 		$page_links[] = '<a class="prev page-numbers" href="' . esc_url( apply_filters( 'paginate_links', $link ) ) . '">' . $prev_text . '</a>';
       
  2028 	endif;
       
  2029 	for ( $n = 1; $n <= $total; $n++ ) :
       
  2030 		$n_display = number_format_i18n($n);
       
  2031 		if ( $n == $current ) :
       
  2032 			$page_links[] = "<span class='page-numbers current'>$n_display</span>";
       
  2033 			$dots = true;
       
  2034 		else :
       
  2035 			if ( $show_all || ( $n <= $end_size || ( $current && $n >= $current - $mid_size && $n <= $current + $mid_size ) || $n > $total - $end_size ) ) :
       
  2036 				$link = str_replace('%_%', 1 == $n ? '' : $format, $base);
       
  2037 				$link = str_replace('%#%', $n, $link);
       
  2038 				if ( $add_args )
       
  2039 					$link = add_query_arg( $add_args, $link );
       
  2040 				$link .= $add_fragment;
       
  2041 				$page_links[] = "<a class='page-numbers' href='" . esc_url( apply_filters( 'paginate_links', $link ) ) . "'>$n_display</a>";
       
  2042 				$dots = true;
       
  2043 			elseif ( $dots && !$show_all ) :
       
  2044 				$page_links[] = '<span class="page-numbers dots">' . __( '&hellip;' ) . '</span>';
       
  2045 				$dots = false;
       
  2046 			endif;
       
  2047 		endif;
       
  2048 	endfor;
       
  2049 	if ( $prev_next && $current && ( $current < $total || -1 == $total ) ) :
       
  2050 		$link = str_replace('%_%', $format, $base);
       
  2051 		$link = str_replace('%#%', $current + 1, $link);
       
  2052 		if ( $add_args )
       
  2053 			$link = add_query_arg( $add_args, $link );
       
  2054 		$link .= $add_fragment;
       
  2055 		$page_links[] = '<a class="next page-numbers" href="' . esc_url( apply_filters( 'paginate_links', $link ) ) . '">' . $next_text . '</a>';
       
  2056 	endif;
       
  2057 	switch ( $type ) :
       
  2058 		case 'array' :
       
  2059 			return $page_links;
       
  2060 			break;
       
  2061 		case 'list' :
       
  2062 			$r .= "<ul class='page-numbers'>\n\t<li>";
       
  2063 			$r .= join("</li>\n\t<li>", $page_links);
       
  2064 			$r .= "</li>\n</ul>\n";
       
  2065 			break;
       
  2066 		default :
       
  2067 			$r = join("\n", $page_links);
       
  2068 			break;
       
  2069 	endswitch;
       
  2070 	return $r;
       
  2071 }
       
  2072 
       
  2073 /**
       
  2074  * Registers an admin colour scheme css file.
       
  2075  *
       
  2076  * Allows a plugin to register a new admin colour scheme. For example:
       
  2077  * <code>
       
  2078  * wp_admin_css_color('classic', __('Classic'), admin_url("css/colors-classic.css"),
       
  2079  * array('#07273E', '#14568A', '#D54E21', '#2683AE'));
       
  2080  * </code>
       
  2081  *
       
  2082  * @since 2.5.0
       
  2083  *
       
  2084  * @param string $key The unique key for this theme.
       
  2085  * @param string $name The name of the theme.
       
  2086  * @param string $url The url of the css file containing the colour scheme.
       
  2087  * @param array $colors Optional An array of CSS color definitions which are used to give the user a feel for the theme.
       
  2088  */
       
  2089 function wp_admin_css_color($key, $name, $url, $colors = array()) {
       
  2090 	global $_wp_admin_css_colors;
       
  2091 
       
  2092 	if ( !isset($_wp_admin_css_colors) )
       
  2093 		$_wp_admin_css_colors = array();
       
  2094 
       
  2095 	$_wp_admin_css_colors[$key] = (object) array('name' => $name, 'url' => $url, 'colors' => $colors);
       
  2096 }
       
  2097 
       
  2098 /**
       
  2099  * Registers the default Admin color schemes
       
  2100  *
       
  2101  * @since 3.0.0
       
  2102  */
       
  2103 function register_admin_color_schemes() {
       
  2104 	wp_admin_css_color( 'classic', _x( 'Blue', 'admin color scheme' ), admin_url( 'css/colors-classic.min.css' ),
       
  2105 		array( '#5589aa', '#cfdfe9', '#d1e5ee', '#eff8ff' ) );
       
  2106 	wp_admin_css_color( 'fresh', _x( 'Gray', 'admin color scheme' ), admin_url( 'css/colors-fresh.min.css' ),
       
  2107 		array( '#555', '#a0a0a0', '#ccc', '#f1f1f1' ) );
       
  2108 }
       
  2109 
       
  2110 /**
       
  2111  * Display the URL of a WordPress admin CSS file.
       
  2112  *
       
  2113  * @see WP_Styles::_css_href and its style_loader_src filter.
       
  2114  *
       
  2115  * @since 2.3.0
       
  2116  *
       
  2117  * @param string $file file relative to wp-admin/ without its ".css" extension.
       
  2118  */
       
  2119 function wp_admin_css_uri( $file = 'wp-admin' ) {
       
  2120 	if ( defined('WP_INSTALLING') ) {
       
  2121 		$_file = "./$file.css";
       
  2122 	} else {
       
  2123 		$_file = admin_url("$file.css");
       
  2124 	}
       
  2125 	$_file = add_query_arg( 'version', get_bloginfo( 'version' ),  $_file );
       
  2126 
       
  2127 	return apply_filters( 'wp_admin_css_uri', $_file, $file );
       
  2128 }
       
  2129 
       
  2130 /**
       
  2131  * Enqueues or directly prints a stylesheet link to the specified CSS file.
       
  2132  *
       
  2133  * "Intelligently" decides to enqueue or to print the CSS file. If the
       
  2134  * 'wp_print_styles' action has *not* yet been called, the CSS file will be
       
  2135  * enqueued. If the wp_print_styles action *has* been called, the CSS link will
       
  2136  * be printed. Printing may be forced by passing true as the $force_echo
       
  2137  * (second) parameter.
       
  2138  *
       
  2139  * For backward compatibility with WordPress 2.3 calling method: If the $file
       
  2140  * (first) parameter does not correspond to a registered CSS file, we assume
       
  2141  * $file is a file relative to wp-admin/ without its ".css" extension. A
       
  2142  * stylesheet link to that generated URL is printed.
       
  2143  *
       
  2144  * @package WordPress
       
  2145  * @since 2.3.0
       
  2146  * @uses $wp_styles WordPress Styles Object
       
  2147  *
       
  2148  * @param string $file Optional. Style handle name or file name (without ".css" extension) relative
       
  2149  * 	 to wp-admin/. Defaults to 'wp-admin'.
       
  2150  * @param bool $force_echo Optional. Force the stylesheet link to be printed rather than enqueued.
       
  2151  */
       
  2152 function wp_admin_css( $file = 'wp-admin', $force_echo = false ) {
       
  2153 	global $wp_styles;
       
  2154 	if ( !is_a($wp_styles, 'WP_Styles') )
       
  2155 		$wp_styles = new WP_Styles();
       
  2156 
       
  2157 	// For backward compatibility
       
  2158 	$handle = 0 === strpos( $file, 'css/' ) ? substr( $file, 4 ) : $file;
       
  2159 
       
  2160 	if ( $wp_styles->query( $handle ) ) {
       
  2161 		if ( $force_echo || did_action( 'wp_print_styles' ) ) // we already printed the style queue. Print this one immediately
       
  2162 			wp_print_styles( $handle );
       
  2163 		else // Add to style queue
       
  2164 			wp_enqueue_style( $handle );
       
  2165 		return;
       
  2166 	}
       
  2167 
       
  2168 	echo apply_filters( 'wp_admin_css', "<link rel='stylesheet' href='" . esc_url( wp_admin_css_uri( $file ) ) . "' type='text/css' />\n", $file );
       
  2169 	if ( function_exists( 'is_rtl' ) && is_rtl() )
       
  2170 		echo apply_filters( 'wp_admin_css', "<link rel='stylesheet' href='" . esc_url( wp_admin_css_uri( "$file-rtl" ) ) . "' type='text/css' />\n", "$file-rtl" );
       
  2171 }
       
  2172 
       
  2173 /**
       
  2174  * Enqueues the default ThickBox js and css.
       
  2175  *
       
  2176  * If any of the settings need to be changed, this can be done with another js
       
  2177  * file similar to media-upload.js. That file should
       
  2178  * require array('thickbox') to ensure it is loaded after.
       
  2179  *
       
  2180  * @since 2.5.0
       
  2181  */
       
  2182 function add_thickbox() {
       
  2183 	wp_enqueue_script( 'thickbox' );
       
  2184 	wp_enqueue_style( 'thickbox' );
       
  2185 
       
  2186 	if ( is_network_admin() )
       
  2187 		add_action( 'admin_head', '_thickbox_path_admin_subfolder' );
       
  2188 }
       
  2189 
       
  2190 /**
       
  2191  * Display the XHTML generator that is generated on the wp_head hook.
       
  2192  *
       
  2193  * @since 2.5.0
       
  2194  */
       
  2195 function wp_generator() {
       
  2196 	the_generator( apply_filters( 'wp_generator_type', 'xhtml' ) );
       
  2197 }
       
  2198 
       
  2199 /**
       
  2200  * Display the generator XML or Comment for RSS, ATOM, etc.
       
  2201  *
       
  2202  * Returns the correct generator type for the requested output format. Allows
       
  2203  * for a plugin to filter generators overall the the_generator filter.
       
  2204  *
       
  2205  * @since 2.5.0
       
  2206  * @uses apply_filters() Calls 'the_generator' hook.
       
  2207  *
       
  2208  * @param string $type The type of generator to output - (html|xhtml|atom|rss2|rdf|comment|export).
       
  2209  */
       
  2210 function the_generator( $type ) {
       
  2211 	echo apply_filters('the_generator', get_the_generator($type), $type) . "\n";
       
  2212 }
       
  2213 
       
  2214 /**
       
  2215  * Creates the generator XML or Comment for RSS, ATOM, etc.
       
  2216  *
       
  2217  * Returns the correct generator type for the requested output format. Allows
       
  2218  * for a plugin to filter generators on an individual basis using the
       
  2219  * 'get_the_generator_{$type}' filter.
       
  2220  *
       
  2221  * @since 2.5.0
       
  2222  * @uses apply_filters() Calls 'get_the_generator_$type' hook.
       
  2223  *
       
  2224  * @param string $type The type of generator to return - (html|xhtml|atom|rss2|rdf|comment|export).
       
  2225  * @return string The HTML content for the generator.
       
  2226  */
       
  2227 function get_the_generator( $type = '' ) {
       
  2228 	if ( empty( $type ) ) {
       
  2229 
       
  2230 		$current_filter = current_filter();
       
  2231 		if ( empty( $current_filter ) )
       
  2232 			return;
       
  2233 
       
  2234 		switch ( $current_filter ) {
       
  2235 			case 'rss2_head' :
       
  2236 			case 'commentsrss2_head' :
       
  2237 				$type = 'rss2';
       
  2238 				break;
       
  2239 			case 'rss_head' :
       
  2240 			case 'opml_head' :
       
  2241 				$type = 'comment';
       
  2242 				break;
       
  2243 			case 'rdf_header' :
       
  2244 				$type = 'rdf';
       
  2245 				break;
       
  2246 			case 'atom_head' :
       
  2247 			case 'comments_atom_head' :
       
  2248 			case 'app_head' :
       
  2249 				$type = 'atom';
       
  2250 				break;
       
  2251 		}
       
  2252 	}
       
  2253 
       
  2254 	switch ( $type ) {
       
  2255 		case 'html':
       
  2256 			$gen = '<meta name="generator" content="WordPress ' . get_bloginfo( 'version' ) . '">';
       
  2257 			break;
       
  2258 		case 'xhtml':
       
  2259 			$gen = '<meta name="generator" content="WordPress ' . get_bloginfo( 'version' ) . '" />';
       
  2260 			break;
       
  2261 		case 'atom':
       
  2262 			$gen = '<generator uri="http://wordpress.org/" version="' . get_bloginfo_rss( 'version' ) . '">WordPress</generator>';
       
  2263 			break;
       
  2264 		case 'rss2':
       
  2265 			$gen = '<generator>http://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) . '</generator>';
       
  2266 			break;
       
  2267 		case 'rdf':
       
  2268 			$gen = '<admin:generatorAgent rdf:resource="http://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) . '" />';
       
  2269 			break;
       
  2270 		case 'comment':
       
  2271 			$gen = '<!-- generator="WordPress/' . get_bloginfo( 'version' ) . '" -->';
       
  2272 			break;
       
  2273 		case 'export':
       
  2274 			$gen = '<!-- generator="WordPress/' . get_bloginfo_rss('version') . '" created="'. date('Y-m-d H:i') . '" -->';
       
  2275 			break;
       
  2276 	}
       
  2277 	return apply_filters( "get_the_generator_{$type}", $gen, $type );
       
  2278 }
       
  2279 
       
  2280 /**
       
  2281  * Outputs the html checked attribute.
       
  2282  *
       
  2283  * Compares the first two arguments and if identical marks as checked
       
  2284  *
       
  2285  * @since 1.0.0
       
  2286  *
       
  2287  * @param mixed $checked One of the values to compare
       
  2288  * @param mixed $current (true) The other value to compare if not just true
       
  2289  * @param bool $echo Whether to echo or just return the string
       
  2290  * @return string html attribute or empty string
       
  2291  */
       
  2292 function checked( $checked, $current = true, $echo = true ) {
       
  2293 	return __checked_selected_helper( $checked, $current, $echo, 'checked' );
       
  2294 }
       
  2295 
       
  2296 /**
       
  2297  * Outputs the html selected attribute.
       
  2298  *
       
  2299  * Compares the first two arguments and if identical marks as selected
       
  2300  *
       
  2301  * @since 1.0.0
       
  2302  *
       
  2303  * @param mixed $selected One of the values to compare
       
  2304  * @param mixed $current (true) The other value to compare if not just true
       
  2305  * @param bool $echo Whether to echo or just return the string
       
  2306  * @return string html attribute or empty string
       
  2307  */
       
  2308 function selected( $selected, $current = true, $echo = true ) {
       
  2309 	return __checked_selected_helper( $selected, $current, $echo, 'selected' );
       
  2310 }
       
  2311 
       
  2312 /**
       
  2313  * Outputs the html disabled attribute.
       
  2314  *
       
  2315  * Compares the first two arguments and if identical marks as disabled
       
  2316  *
       
  2317  * @since 3.0.0
       
  2318  *
       
  2319  * @param mixed $disabled One of the values to compare
       
  2320  * @param mixed $current (true) The other value to compare if not just true
       
  2321  * @param bool $echo Whether to echo or just return the string
       
  2322  * @return string html attribute or empty string
       
  2323  */
       
  2324 function disabled( $disabled, $current = true, $echo = true ) {
       
  2325 	return __checked_selected_helper( $disabled, $current, $echo, 'disabled' );
       
  2326 }
       
  2327 
       
  2328 /**
       
  2329  * Private helper function for checked, selected, and disabled.
       
  2330  *
       
  2331  * Compares the first two arguments and if identical marks as $type
       
  2332  *
       
  2333  * @since 2.8.0
       
  2334  * @access private
       
  2335  *
       
  2336  * @param mixed $helper One of the values to compare
       
  2337  * @param mixed $current (true) The other value to compare if not just true
       
  2338  * @param bool $echo Whether to echo or just return the string
       
  2339  * @param string $type The type of checked|selected|disabled we are doing
       
  2340  * @return string html attribute or empty string
       
  2341  */
       
  2342 function __checked_selected_helper( $helper, $current, $echo, $type ) {
       
  2343 	if ( (string) $helper === (string) $current )
       
  2344 		$result = " $type='$type'";
       
  2345 	else
       
  2346 		$result = '';
       
  2347 
       
  2348 	if ( $echo )
       
  2349 		echo $result;
       
  2350 
       
  2351 	return $result;
       
  2352 }
       
  2353 
       
  2354 /**
       
  2355  * Default settings for heartbeat
       
  2356  *
       
  2357  * Outputs the nonce used in the heartbeat XHR
       
  2358  *
       
  2359  * @since 3.6.0
       
  2360  *
       
  2361  * @param array $settings
       
  2362  * @return array $settings
       
  2363  */
       
  2364 function wp_heartbeat_settings( $settings ) {
       
  2365 	if ( ! is_admin() )
       
  2366 		$settings['ajaxurl'] = admin_url( 'admin-ajax.php', 'relative' );
       
  2367 
       
  2368 	if ( is_user_logged_in() )
       
  2369 		$settings['nonce'] = wp_create_nonce( 'heartbeat-nonce' );
       
  2370 
       
  2371 	return $settings;
       
  2372 }