JezK
Edit File: vars.php
<?php /** * Creates common globals for the rest of WordPress * * Sets $pagenow global which is the filename of the current screen. * Checks for the browser to set which one is currently being used. * * Detects which user environment WordPress is being used on. * Only attempts to check for Apache, Nginx and IIS -- three web * servers with known pretty permalink capability. * * Note: Though Nginx is detected, WordPress does not currently * generate rewrite rules for it. See https://developer.wordpress.org/advanced-administration/server/web-server/nginx/ * * @package WordPress */ // Don't load directly. if ( ! defined( 'ABSPATH' ) ) { exit; } global $pagenow, $is_lynx, $is_gecko, $is_winIE, $is_macIE, $is_opera, $is_NS4, $is_safari, $is_chrome, $is_iphone, $is_IE, $is_edge, $is_apache, $is_IIS, $is_iis7, $is_nginx, $is_caddy; // On which page are we? if ( is_admin() ) { // wp-admin pages are checked more carefully. if ( is_network_admin() ) { preg_match( '#/wp-admin/network/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches ); } elseif ( is_user_admin() ) { preg_match( '#/wp-admin/user/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches ); } else { preg_match( '#/wp-admin/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches ); } $pagenow = ! empty( $self_matches[1] ) ? $self_matches[1] : ''; $pagenow = trim( $pagenow, '/' ); $pagenow = preg_replace( '#\?.*?$#', '', $pagenow ); if ( '' === $pagenow || 'index' === $pagenow || 'index.php' === $pagenow ) { $pagenow = 'index.php'; } else { preg_match( '#(.*?)(/|$)#', $pagenow, $self_matches ); $pagenow = strtolower( $self_matches[1] ); if ( ! str_ends_with( $pagenow, '.php' ) ) { $pagenow .= '.php'; // For `Options +Multiviews`: /wp-admin/themes/index.php (themes.php is queried). } } } else { if ( preg_match( '#([^/]+\.php)([?/].*?)?$#i', $_SERVER['PHP_SELF'], $self_matches ) ) { $pagenow = strtolower( $self_matches[1] ); } else { $pagenow = 'index.php'; } } unset( $self_matches ); // Simple browser detection. $is_lynx = false; $is_gecko = false; $is_winIE = false; $is_macIE = false; $is_opera = false; $is_NS4 = false; $is_safari = false; $is_chrome = false; $is_iphone = false; $is_edge = false; if ( isset( $_SERVER['HTTP_USER_AGENT'] ) ) { if ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Lynx' ) ) { $is_lynx = true; } elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Edg' ) ) { $is_edge = true; } elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Opera' ) || str_contains( $_SERVER['HTTP_USER_AGENT'], 'OPR/' ) ) { $is_opera = true; } elseif ( stripos( $_SERVER['HTTP_USER_AGENT'], 'chrome' ) !== false ) { if ( stripos( $_SERVER['HTTP_USER_AGENT'], 'chromeframe' ) !== false ) { $is_admin = is_admin(); /** * Filters whether Google Chrome Frame should be used, if available. * * @since 3.2.0 * * @param bool $is_admin Whether to use the Google Chrome Frame. Default is the value of is_admin(). */ $is_chrome = apply_filters( 'use_google_chrome_frame', $is_admin ); if ( $is_chrome ) { header( 'X-UA-Compatible: chrome=1' ); } $is_winIE = ! $is_chrome; } else { $is_chrome = true; } } elseif ( stripos( $_SERVER['HTTP_USER_AGENT'], 'safari' ) !== false ) { $is_safari = true; } elseif ( ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'MSIE' ) || str_contains( $_SERVER['HTTP_USER_AGENT'], 'Trident' ) ) && str_contains( $_SERVER['HTTP_USER_AGENT'], 'Win' ) ) { $is_winIE = true; } elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'MSIE' ) && str_contains( $_SERVER['HTTP_USER_AGENT'], 'Mac' ) ) { $is_macIE = true; } elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Gecko' ) ) { $is_gecko = true; } elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Nav' ) && str_contains( $_SERVER['HTTP_USER_AGENT'], 'Mozilla/4.' ) ) { $is_NS4 = true; } } if ( $is_safari && stripos( $_SERVER['HTTP_USER_AGENT'], 'mobile' ) !== false ) { $is_iphone = true; } $is_IE = ( $is_macIE || $is_winIE ); // Server detection. /** * Whether the server software is Apache or something else. * * @global bool $is_apache */ $is_apache = ( str_contains( $_SERVER['SERVER_SOFTWARE'], 'Apache' ) || str_contains( $_SERVER['SERVER_SOFTWARE'], 'LiteSpeed' ) ); /** * Whether the server software is Nginx or something else. * * @global bool $is_nginx */ $is_nginx = ( str_contains( $_SERVER['SERVER_SOFTWARE'], 'nginx' ) ); /** * Whether the server software is Caddy / FrankenPHP or something else. * * @global bool $is_caddy */ $is_caddy = ( str_contains( $_SERVER['SERVER_SOFTWARE'], 'Caddy' ) || str_contains( $_SERVER['SERVER_SOFTWARE'], 'FrankenPHP' ) ); /** * Whether the server software is IIS or something else. * * @global bool $is_IIS */ $is_IIS = ! $is_apache && ( str_contains( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS' ) || str_contains( $_SERVER['SERVER_SOFTWARE'], 'ExpressionDevServer' ) ); /** * Whether the server software is IIS 7.X or greater. * * @global bool $is_iis7 */ $is_iis7 = $is_IIS && (int) substr( $_SERVER['SERVER_SOFTWARE'], strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/' ) + 14 ) >= 7; /** * Test if the current browser runs on a mobile device (smart phone, tablet, etc.). * * @since 3.4.0 * @since 6.4.0 Added checking for the Sec-CH-UA-Mobile request header. * * @return bool Whether the request is from a mobile device. */ function wp_is_mobile() { if ( isset( $_SERVER['HTTP_SEC_CH_UA_MOBILE'] ) ) { // This is the `Sec-CH-UA-Mobile` user agent client hint HTTP request header. // See <https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Mobile>. $is_mobile = ( '?1' === $_SERVER['HTTP_SEC_CH_UA_MOBILE'] ); } elseif ( empty( $_SERVER['HTTP_USER_AGENT'] ) ) { $is_mobile = false; } elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Mobile' ) // Many mobile devices (all iPhone, iPad, etc.) || str_contains( $_SERVER['HTTP_USER_AGENT'], 'Android' ) || str_contains( $_SERVER['HTTP_USER_AGENT'], 'Silk/' ) || str_contains( $_SERVER['HTTP_USER_AGENT'], 'Kindle' ) || str_contains( $_SERVER['HTTP_USER_AGENT'], 'BlackBerry' ) || str_contains( $_SERVER['HTTP_USER_AGENT'], 'Opera Mini' ) || str_contains( $_SERVER['HTTP_USER_AGENT'], 'Opera Mobi' ) ) { $is_mobile = true; } else { $is_mobile = false; } /** * Filters whether the request should be treated as coming from a mobile device or not. * * @since 4.9.0 * * @param bool $is_mobile Whether the request is from a mobile device or not. */ return apply_filters( 'wp_is_mobile', $is_mobile ); }