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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, Nginx and IIS -- three web 10 * servers with known pretty permalink capability. 11 * 12 * Note: Though Nginx is detected, WordPress does not currently 13 * generate rewrite rules for it. See https://wordpress.org/support/article/nginx/ 14 * 15 * @package WordPress 16 */ 17 18 global $pagenow, 19 $is_lynx, $is_gecko, $is_winIE, $is_macIE, $is_opera, $is_NS4, $is_safari, $is_chrome, $is_iphone, $is_IE, $is_edge, 20 $is_apache, $is_IIS, $is_iis7, $is_nginx; 21 22 // On which page are we? 23 if ( is_admin() ) { 24 // wp-admin pages are checked more carefully. 25 if ( is_network_admin() ) { 26 preg_match( '#/wp-admin/network/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches ); 27 } elseif ( is_user_admin() ) { 28 preg_match( '#/wp-admin/user/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches ); 29 } else { 30 preg_match( '#/wp-admin/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches ); 31 } 32 $pagenow = $self_matches[1]; 33 $pagenow = trim( $pagenow, '/' ); 34 $pagenow = preg_replace( '#\?.*?$#', '', $pagenow ); 35 if ( '' === $pagenow || 'index' === $pagenow || 'index.php' === $pagenow ) { 36 $pagenow = 'index.php'; 37 } else { 38 preg_match( '#(.*?)(/|$)#', $pagenow, $self_matches ); 39 $pagenow = strtolower( $self_matches[1] ); 40 if ( '.php' !== substr( $pagenow, -4, 4 ) ) { 41 $pagenow .= '.php'; // For `Options +Multiviews`: /wp-admin/themes/index.php (themes.php is queried). 42 } 43 } 44 } else { 45 if ( preg_match( '#([^/]+\.php)([?/].*?)?$#i', $_SERVER['PHP_SELF'], $self_matches ) ) { 46 $pagenow = strtolower( $self_matches[1] ); 47 } else { 48 $pagenow = 'index.php'; 49 } 50 } 51 unset( $self_matches ); 52 53 // Simple browser detection. 54 $is_lynx = false; 55 $is_gecko = false; 56 $is_winIE = false; 57 $is_macIE = false; 58 $is_opera = false; 59 $is_NS4 = false; 60 $is_safari = false; 61 $is_chrome = false; 62 $is_iphone = false; 63 $is_edge = false; 64 65 if ( isset( $_SERVER['HTTP_USER_AGENT'] ) ) { 66 if ( strpos( $_SERVER['HTTP_USER_AGENT'], 'Lynx' ) !== false ) { 67 $is_lynx = true; 68 } elseif ( strpos( $_SERVER['HTTP_USER_AGENT'], 'Edge' ) !== false ) { 69 $is_edge = true; 70 } elseif ( stripos( $_SERVER['HTTP_USER_AGENT'], 'chrome' ) !== false ) { 71 if ( stripos( $_SERVER['HTTP_USER_AGENT'], 'chromeframe' ) !== false ) { 72 $is_admin = is_admin(); 73 /** 74 * Filters whether Google Chrome Frame should be used, if available. 75 * 76 * @since 3.2.0 77 * 78 * @param bool $is_admin Whether to use the Google Chrome Frame. Default is the value of is_admin(). 79 */ 80 $is_chrome = apply_filters( 'use_google_chrome_frame', $is_admin ); 81 if ( $is_chrome ) { 82 header( 'X-UA-Compatible: chrome=1' ); 83 } 84 $is_winIE = ! $is_chrome; 85 } else { 86 $is_chrome = true; 87 } 88 } elseif ( stripos( $_SERVER['HTTP_USER_AGENT'], 'safari' ) !== false ) { 89 $is_safari = true; 90 } elseif ( ( strpos( $_SERVER['HTTP_USER_AGENT'], 'MSIE' ) !== false || strpos( $_SERVER['HTTP_USER_AGENT'], 'Trident' ) !== false ) && strpos( $_SERVER['HTTP_USER_AGENT'], 'Win' ) !== false ) { 91 $is_winIE = true; 92 } elseif ( strpos( $_SERVER['HTTP_USER_AGENT'], 'MSIE' ) !== false && strpos( $_SERVER['HTTP_USER_AGENT'], 'Mac' ) !== false ) { 93 $is_macIE = true; 94 } elseif ( strpos( $_SERVER['HTTP_USER_AGENT'], 'Gecko' ) !== false ) { 95 $is_gecko = true; 96 } elseif ( strpos( $_SERVER['HTTP_USER_AGENT'], 'Opera' ) !== false ) { 97 $is_opera = true; 98 } elseif ( strpos( $_SERVER['HTTP_USER_AGENT'], 'Nav' ) !== false && strpos( $_SERVER['HTTP_USER_AGENT'], 'Mozilla/4.' ) !== false ) { 99 $is_NS4 = true; 100 } 101 } 102 103 if ( $is_safari && stripos( $_SERVER['HTTP_USER_AGENT'], 'mobile' ) !== false ) { 104 $is_iphone = true; 105 } 106 107 $is_IE = ( $is_macIE || $is_winIE ); 108 109 // Server detection. 110 111 /** 112 * Whether the server software is Apache or something else 113 * 114 * @global bool $is_apache 115 */ 116 $is_apache = ( strpos( $_SERVER['SERVER_SOFTWARE'], 'Apache' ) !== false || strpos( $_SERVER['SERVER_SOFTWARE'], 'LiteSpeed' ) !== false ); 117 118 /** 119 * Whether the server software is Nginx or something else 120 * 121 * @global bool $is_nginx 122 */ 123 $is_nginx = ( strpos( $_SERVER['SERVER_SOFTWARE'], 'nginx' ) !== false ); 124 125 /** 126 * Whether the server software is IIS or something else 127 * 128 * @global bool $is_IIS 129 */ 130 $is_IIS = ! $is_apache && ( strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS' ) !== false || strpos( $_SERVER['SERVER_SOFTWARE'], 'ExpressionDevServer' ) !== false ); 131 132 /** 133 * Whether the server software is IIS 7.X or greater 134 * 135 * @global bool $is_iis7 136 */ 137 $is_iis7 = $is_IIS && (int) substr( $_SERVER['SERVER_SOFTWARE'], strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/' ) + 14 ) >= 7; 138 139 /** 140 * Test if the current browser runs on a mobile device (smart phone, tablet, etc.) 141 * 142 * @since 3.4.0 143 * 144 * @return bool 145 */ 146 function wp_is_mobile() { 147 if ( empty( $_SERVER['HTTP_USER_AGENT'] ) ) { 148 $is_mobile = false; 149 } elseif ( strpos( $_SERVER['HTTP_USER_AGENT'], 'Mobile' ) !== false // Many mobile devices (all iPhone, iPad, etc.) 150 || strpos( $_SERVER['HTTP_USER_AGENT'], 'Android' ) !== false 151 || strpos( $_SERVER['HTTP_USER_AGENT'], 'Silk/' ) !== false 152 || strpos( $_SERVER['HTTP_USER_AGENT'], 'Kindle' ) !== false 153 || strpos( $_SERVER['HTTP_USER_AGENT'], 'BlackBerry' ) !== false 154 || strpos( $_SERVER['HTTP_USER_AGENT'], 'Opera Mini' ) !== false 155 || strpos( $_SERVER['HTTP_USER_AGENT'], 'Opera Mobi' ) !== false ) { 156 $is_mobile = true; 157 } else { 158 $is_mobile = false; 159 } 160 161 /** 162 * Filters whether the request should be treated as coming from a mobile device or not. 163 * 164 * @since 4.9.0 165 * 166 * @param bool $is_mobile Whether the request is from a mobile device or not. 167 */ 168 return apply_filters( 'wp_is_mobile', $is_mobile ); 169 }
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Generated: Sat Mar 6 01:00:04 2021 | Cross-referenced by PHPXref 0.7.1 |