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

    41 	$is_lynx = true;

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

    43 	$is_chrome = true;

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

    45 	$is_safari = true;

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

    47 	$is_gecko = true;

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

    49 	$is_winIE = true;

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

    51 	$is_macIE = true;

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

    53 	$is_opera = true;

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

    55 	$is_NS4 = true;

    56 }

    57 

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

    59 	$is_iphone = true;

    60 

    61 $is_IE = ( $is_macIE || $is_winIE );

    62 

    63 // Server detection

    64 

    65 /**

    66  * Whether the server software is Apache or something else

    67  * @global bool $is_apache

    68  */

    69 $is_apache = (strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') !== false || strpos($_SERVER['SERVER_SOFTWARE'], 'LiteSpeed') !== false);

    70 

    71 /**

    72  * Whether the server software is IIS or something else

    73  * @global bool $is_IIS

    74  */

    75 $is_IIS = (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== false || strpos($_SERVER['SERVER_SOFTWARE'], 'ExpressionDevServer') !== false);

    76 

    77 /**

    78  * Whether the server software is IIS 7.X

    79  * @global bool $is_iis7

    80  */

    81 $is_iis7 = (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/7.') !== false);

    82 

    83 

    84 ?>