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 // On which page are we ?

    16 if ( is_admin() ) {

    17 	// wp-admin pages are checked more carefully

    18 	preg_match('#/wp-admin/?(.*?)$#i', $PHP_SELF, $self_matches);

    19 	$pagenow = $self_matches[1];

    20 	$pagenow = trim($pagenow, '/');

    21 	$pagenow = preg_replace('#\?.*?$#', '', $pagenow);

    22 	if ( '' === $pagenow || 'index' === $pagenow || 'index.php' === $pagenow ) {

    23 		$pagenow = 'index.php';

    24 	} else {

    25 		preg_match('#(.*?)(/|$)#', $pagenow, $self_matches);

    26 		$pagenow = strtolower($self_matches[1]);

    27 		if ( '.php' !== substr($pagenow, -4, 4) )

    28 			$pagenow .= '.php'; // for Options +Multiviews: /wp-admin/themes/index.php (themes.php is queried)

    29 	}

    30 } else {

    31 	if ( preg_match('#([^/]+\.php)([?/].*?)?$#i', $PHP_SELF, $self_matches) )

    32 		$pagenow = strtolower($self_matches[1]);

    33 	else

    34 		$pagenow = 'index.php';

    35 }

    36 

    37 // Simple browser detection

    38 $is_lynx = $is_gecko = $is_winIE = $is_macIE = $is_opera = $is_NS4 = $is_safari = $is_chrome = $is_iphone = false;

    39 

    40 if ( isset($_SERVER['HTTP_USER_AGENT']) ) {

    41 	if ( strpos($_SERVER['HTTP_USER_AGENT'], 'Lynx') !== false ) {

    42 		$is_lynx = true;

    43 	} elseif ( strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'chrome') !== false ) {

    44 		$is_chrome = true;

    45 	} elseif ( strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'safari') !== false ) {

    46 		$is_safari = true;

    47 	} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Gecko') !== false ) {

    48 		$is_gecko = true;

    49 	} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Win') !== false ) {

    50 		$is_winIE = true;

    51 	} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mac') !== false ) {

    52 		$is_macIE = true;

    53 	} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Opera') !== false ) {

    54 		$is_opera = true;

    55 	} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Nav') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mozilla/4.') !== false ) {

    56 		$is_NS4 = true;

    57 	}

    58 }

    59 

    60 if ( $is_safari && strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'mobile') !== false )

    61 	$is_iphone = true;

    62 

    63 $is_IE = ( $is_macIE || $is_winIE );

    64 

    65 // Server detection

    66 

    67 /**

    68  * Whether the server software is Apache or something else

    69  * @global bool $is_apache

    70  */

    71 $is_apache = (strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') !== false || strpos($_SERVER['SERVER_SOFTWARE'], 'LiteSpeed') !== false);

    72 

    73 /**

    74  * Whether the server software is IIS or something else

    75  * @global bool $is_IIS

    76  */

    77 $is_IIS = (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== false || strpos($_SERVER['SERVER_SOFTWARE'], 'ExpressionDevServer') !== false);

    78 

    79 /**

    80  * Whether the server software is IIS 7.X

    81  * @global bool $is_iis7

    82  */

    83 $is_iis7 = (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/7.') !== false);

    84 

    85 

    86 ?>