wp/wp-includes/vars.php
changeset 0 d970ebf37754
child 5 5e2f62d02dcd
equal deleted inserted replaced
-1:000000000000 0:d970ebf37754
       
     1 <?php
       
     2 /**
       
     3  * Creates common globals for the rest of WordPress
       
     4  *
       
     5  * Sets $pagenow global which is the current page. Checks
       
     6  * for the browser to set which one is currently being used.
       
     7  *
       
     8  * Detects which user environment WordPress is being used on.
       
     9  * Only attempts to check for Apache and IIS. Two web servers
       
    10  * with known permalink capability.
       
    11  *
       
    12  * @package WordPress
       
    13  */
       
    14 
       
    15 global $pagenow,
       
    16 	$is_lynx, $is_gecko, $is_winIE, $is_macIE, $is_opera, $is_NS4, $is_safari, $is_chrome, $is_iphone, $is_IE,
       
    17 	$is_apache, $is_IIS, $is_iis7;
       
    18 
       
    19 // On which page are we ?
       
    20 if ( is_admin() ) {
       
    21 	// wp-admin pages are checked more carefully
       
    22 	if ( is_network_admin() )
       
    23 		preg_match('#/wp-admin/network/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches);
       
    24 	elseif ( is_user_admin() )
       
    25 		preg_match('#/wp-admin/user/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches);
       
    26 	else
       
    27 		preg_match('#/wp-admin/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches);
       
    28 	$pagenow = $self_matches[1];
       
    29 	$pagenow = trim($pagenow, '/');
       
    30 	$pagenow = preg_replace('#\?.*?$#', '', $pagenow);
       
    31 	if ( '' === $pagenow || 'index' === $pagenow || 'index.php' === $pagenow ) {
       
    32 		$pagenow = 'index.php';
       
    33 	} else {
       
    34 		preg_match('#(.*?)(/|$)#', $pagenow, $self_matches);
       
    35 		$pagenow = strtolower($self_matches[1]);
       
    36 		if ( '.php' !== substr($pagenow, -4, 4) )
       
    37 			$pagenow .= '.php'; // for Options +Multiviews: /wp-admin/themes/index.php (themes.php is queried)
       
    38 	}
       
    39 } else {
       
    40 	if ( preg_match('#([^/]+\.php)([?/].*?)?$#i', $_SERVER['PHP_SELF'], $self_matches) )
       
    41 		$pagenow = strtolower($self_matches[1]);
       
    42 	else
       
    43 		$pagenow = 'index.php';
       
    44 }
       
    45 unset($self_matches);
       
    46 
       
    47 // Simple browser detection
       
    48 $is_lynx = $is_gecko = $is_winIE = $is_macIE = $is_opera = $is_NS4 = $is_safari = $is_chrome = $is_iphone = false;
       
    49 
       
    50 if ( isset($_SERVER['HTTP_USER_AGENT']) ) {
       
    51 	if ( strpos($_SERVER['HTTP_USER_AGENT'], 'Lynx') !== false ) {
       
    52 		$is_lynx = true;
       
    53 	} elseif ( stripos($_SERVER['HTTP_USER_AGENT'], 'chrome') !== false ) {
       
    54 		if ( stripos( $_SERVER['HTTP_USER_AGENT'], 'chromeframe' ) !== false ) {
       
    55 			$is_admin = is_admin();
       
    56 			/**
       
    57 			 * Filter whether Google Chrome Frame should be used, if available.
       
    58 			 *
       
    59 			 * @since 3.2.0
       
    60 			 *
       
    61 			 * @param bool $is_admin Whether to use the Google Chrome Frame. Default is the value of is_admin().
       
    62 			 */
       
    63 			if ( $is_chrome = apply_filters( 'use_google_chrome_frame', $is_admin ) )
       
    64 				header( 'X-UA-Compatible: chrome=1' );
       
    65 			$is_winIE = ! $is_chrome;
       
    66 		} else {
       
    67 			$is_chrome = true;
       
    68 		}
       
    69 	} elseif ( stripos($_SERVER['HTTP_USER_AGENT'], 'safari') !== false ) {
       
    70 		$is_safari = true;
       
    71 	} elseif ( ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'Trident') !== false ) && strpos($_SERVER['HTTP_USER_AGENT'], 'Win') !== false ) {
       
    72 		$is_winIE = true;
       
    73 	} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mac') !== false ) {
       
    74 		$is_macIE = true;
       
    75 	} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Gecko') !== false ) {
       
    76 		$is_gecko = true;
       
    77 	} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Opera') !== false ) {
       
    78 		$is_opera = true;
       
    79 	} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Nav') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mozilla/4.') !== false ) {
       
    80 		$is_NS4 = true;
       
    81 	}
       
    82 }
       
    83 
       
    84 if ( $is_safari && stripos($_SERVER['HTTP_USER_AGENT'], 'mobile') !== false )
       
    85 	$is_iphone = true;
       
    86 
       
    87 $is_IE = ( $is_macIE || $is_winIE );
       
    88 
       
    89 // Server detection
       
    90 
       
    91 /**
       
    92  * Whether the server software is Apache or something else
       
    93  * @global bool $is_apache
       
    94  */
       
    95 $is_apache = (strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') !== false || strpos($_SERVER['SERVER_SOFTWARE'], 'LiteSpeed') !== false);
       
    96 
       
    97 /**
       
    98  * Whether the server software is Nginx or something else
       
    99  * @global bool $is_nginx
       
   100  */
       
   101 $is_nginx = (strpos($_SERVER['SERVER_SOFTWARE'], 'nginx') !== false);
       
   102 
       
   103 /**
       
   104  * Whether the server software is IIS or something else
       
   105  * @global bool $is_IIS
       
   106  */
       
   107 $is_IIS = !$is_apache && (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== false || strpos($_SERVER['SERVER_SOFTWARE'], 'ExpressionDevServer') !== false);
       
   108 
       
   109 /**
       
   110  * Whether the server software is IIS 7.X or greater
       
   111  * @global bool $is_iis7
       
   112  */
       
   113 $is_iis7 = $is_IIS && intval( substr( $_SERVER['SERVER_SOFTWARE'], strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/' ) + 14 ) ) >= 7;
       
   114 
       
   115 /**
       
   116  * Test if the current browser runs on a mobile device (smart phone, tablet, etc.)
       
   117  *
       
   118  * @return bool true|false
       
   119  */
       
   120 function wp_is_mobile() {
       
   121 	static $is_mobile;
       
   122 
       
   123 	if ( isset($is_mobile) )
       
   124 		return $is_mobile;
       
   125 
       
   126 	if ( empty($_SERVER['HTTP_USER_AGENT']) ) {
       
   127 		$is_mobile = false;
       
   128 	} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Mobile') !== false // many mobile devices (all iPhone, iPad, etc.)
       
   129 		|| strpos($_SERVER['HTTP_USER_AGENT'], 'Android') !== false
       
   130 		|| strpos($_SERVER['HTTP_USER_AGENT'], 'Silk/') !== false
       
   131 		|| strpos($_SERVER['HTTP_USER_AGENT'], 'Kindle') !== false
       
   132 		|| strpos($_SERVER['HTTP_USER_AGENT'], 'BlackBerry') !== false
       
   133 		|| strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mini') !== false
       
   134 		|| strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mobi') !== false ) {
       
   135 			$is_mobile = true;
       
   136 	} else {
       
   137 		$is_mobile = false;
       
   138 	}
       
   139 
       
   140 	return $is_mobile;
       
   141 }