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