n isset( $_SERVER['SERVER_SOFTWARE'] ) && stristr( htmlspecialchars( stripslashes( $_SERVER['SERVER_SOFTWARE'] ) ), 'LiteSpeed' ) !== false; // phpcs:ignore } /** * Returns true if server is nginx. * * @static * * @return bool */ public static function is_nginx() { return isset( $_SERVER['SERVER_SOFTWARE'] ) && stristr( htmlspecialchars( stripslashes( $_SERVER['SERVER_SOFTWARE'] ) ), 'nginx' ) !== false; // phpcs:ignore } /** * Returns true if server is nginx. * * @static * * @return bool */ public static function is_iis() { return isset( $_SERVER['SERVER_SOFTWARE'] ) && stristr( htmlspecialchars( stripslashes( $_SERVER['SERVER_SOFTWARE'] ) ), 'IIS' ) !== false; // phpcs:ignore } /** * Returns host/domain from URL. * * @static * * @param string $url URL. * @return string */ public static function url_to_host( $url ) { $a = parse_url( $url ); // phpcs:ignore WordPress.WP.AlternativeFunctions.parse_url_parse_url if ( isset( $a['host'] ) ) { return $a['host']; } return ''; } /** * Returns path from URL. Without trailing slash. * * @static * * @param string $url URL. */ public static function url_to_uri( $url ) { $uri = @parse_url( $url, PHP_URL_PATH ); // Convert FALSE and other return values to string. if ( empty( $uri ) ) { return ''; } return rtrim( $uri, '/' ); } /** * Returns current blog ID. * * @static * * @return int */ public static function blog_id() { global $w3_current_blog_id; if ( ! is_null( $w3_current_blog_id ) ) { return $w3_current_blog_id; } if ( ! self::is_wpmu() || is_network_admin() ) { $w3_current_blog_id = 0; return $w3_current_blog_id; } $blog_data = Util_WpmuBlogmap::get_current_blog_data(); if ( ! is_null( $blog_data ) ) { $w3_current_blog_id = substr( $blog_data, 1 ); } else { $w3_current_blog_id = 0; } return $w3_current_blog_id; } /** * Memoized version of wp_upload_dir. That function is quite slow * for a number of times CDN calls it. * * @static * * @return string */ public static function wp_upload_dir() { static $values_by_blog = array(); $blog_id = self::blog_id(); if ( ! isset( $values_by_blog[ $blog_id ] ) ) $values_by_blog[ $blog_id ] = wp_upload_dir(); return $values_by_blog[ $blog_id ]; } /** * Returns path to section's cache dir. * * @static * * @param string $section Section. * @return string */ public static function cache_dir( $section ) { return W3TC_CACHE_DIR . DIRECTORY_SEPARATOR . $section; } /** * Returns path to blog's cache dir. * * @static * * @param string $section Section. * @param int $blog_id Blog id. * @return string */ public static function cache_blog_dir( $section, $blog_id = null ) { if ( ! self::is_wpmu() ) { $postfix = ''; } else { if ( is_null( $blog_id ) ) { $blog_id = self::blog_id(); } $postfix = DIRECTORY_SEPARATOR . sprintf( '%d', $blog_id ); if ( defined( 'W3TC_BLOG_LEVELS' ) ) { for ( $n = 0; $n < W3TC_BLOG_LEVELS; $n++ ) { $postfix = DIRECTORY_SEPARATOR . substr( $postfix, strlen( $postfix ) - 1 - $n, 1 ) . $postfix; } } } return self::cache_dir( $section ) . $postfix; } /** * Cache blog minify directory. * * @static * * @return string */ public static function cache_blog_minify_dir() { // when minify manual used with a shared config - shared // minify urls has to be used too, since CDN upload is possible // only from network admin if ( self::is_wpmu() && self::is_using_master_config() && ! Dispatcher::config()->get_boolean( 'minify.auto' ) ) { $path = self::cache_blog_dir( 'minify', 0 ); } else { $path = self::cache_blog_dir( 'minify' ); } return $path; } /** * Returns URL regexp from URL. * * @static * * @param string $url URL. * @return string */ public static function get_url_regexp( $url ) { $url = preg_replace( '~(https?:)?//~i', '', $url ); $url = preg_replace( '~^www\.~i', '', $url ); $regexp = '(https?:)?//(www\.)?' . self::preg_quote( $url ); return $regexp; } /** * Returns SSL URL if current connection is https. * * @static * * @param string $url URL. * @return string */ public static function url_to_maybe_https( $url ) { if ( self::is_https() ) { $url = str_replace( 'http://', 'https://', $url ); } return $url; } /** * Get domain URL. * * @static * * @return string */ public static function home_domain_root_url() { $home_url = get_home_url(); $parse_url = @parse_url( $home_url ); // phpcs:ignore if ( $parse_url && isset( $parse_url['scheme'] ) && isset( $parse_url['host'] ) ) { $scheme = $parse_url['scheme']; $host = $parse_url['host']; $port = ( isset( $parse_url['port'] ) && 80 != $parse_url['port'] ? ':' . (int) $parse_url['port'] : '' ); // phpcs:ignore $domain_url = sprintf( '%s://%s%s', $scheme, $host, $port ); return $domain_url; } return false; } /** * Returns domain url regexp. * * @static * * @return string */ public static function home_domain_root_url_regexp() { $domain_url = self::home_domain_root_url(); $regexp = self::get_url_regexp( $domain_url ); return $regexp; } /** * Returns SSL home url. * * @static * * @return string */ public static function home_url_maybe_https() { $home_url = get_home_url(); $ssl = self::url_to_maybe_https( $home_url ); return $ssl; } /** * Returns home url regexp. * * @static * * @return string */ public static function home_url_regexp() { $home_url = get_home_url(); $regexp = self::get_url_regexp( $home_url ); return $regexp; } /** * Copy of WordPress get_home_path, but accessible not only for wp-admin * Get the absolute filesystem path to the root of the WordPress installation * (i.e. filesystem path of siteurl). * * @static * * @return string Full filesystem path to the root of the WordPress installation. */ public static function site_path() { $home = set_url_scheme( get_option( 'home' ), 'http' ); $siteurl = set_url_scheme( get_option( 'siteurl' ), 'http' ); $home_path = ABSPATH; if ( ! empty( $home ) && 0 !== strcasecmp( $home, $siteurl ) ) { $wp_path_rel_to_home = str_ireplace( $home, '', $siteurl ); // $siteurl - $home. // fix of get_home_path, used when index.php is moved outside of wp folder. $script_filename = isset( $_SERVER['SCRIPT_FILENAME'] ) ? htmlspecialchars( stripslashes( $_SERVER['SCRIPT_FILENAME'] ) ) : ''; // phpcs:ignore $pos = strripos( str_replace( '\\', '/', $script_filename ), trailingslashit( $wp_path_rel_to_home ) ); if ( false !== $pos ) { $home_path = substr( $script_filename, 0, $pos ); $home_path = trailingslashit( $home_path ); } else if ( defined( 'WP_CLI' ) ) { $pos = strripos( str_replace( '\\', '/', ABSPATH ), trailingslashit( $wp_path_rel_to_home ) ); if ( $pos !== false ) { $home_path = substr( ABSPATH, 0, $pos ); $home_path = trailingslashit( $home_path ); } } } return str_replace( '\\', DIRECTORY_SEPARATOR, $home_path ); } /** * Returns absolute path to document root. * No trailing slash! * * @static * * @return string */ public static function document_root() { static $document_root = null; if ( ! is_null( $document_root ) ) { return $document_root; } $c = Dispatcher::config(); $docroot_fix = $c->get_boolean( 'docroot_fix.enable' ); if ( $docroot_fix ) { $document_root = untrailingslashit( ABSPATH ); return $document_root; } if ( ! empty( $_SERVER['SCRIPT_FILENAME'] ) && ! empty( $_SERVER['PHP_SELF'] ) ) { $script_filename = self::normalize_path( htmlspecialchars( stripslashes( $_SERVER['SCRIPT_FILENAME'] ) ) // phpcs:ignore ); $php_self = self::normalize_path( htmlspecialchars( stripslashes( $_SERVER['PHP_SELF'] ) ) // phpcs:ignore ); if ( substr( $script_filename, -strlen( $php_self ) ) == $php_self ) { $document_root = substr( $script_filename, 0, -strlen( $php_self ) ); $document_root = realpath( $document_root ); return $document_root; } } if ( ! empty( $_SERVER['PATH_TRANSLATED'] ) && ! empty( $_SERVER['PHP_SELF'] ) ) { $document_root = substr( self::normalize_path( htmlspecialchars( stripslashes( $_SERVER['PATH_TRANSLATED'] ) ) ), // phpcs:ignore 0, -strlen( self::normalize_path( htmlspecialchars( stripslashes( $_SERVER['PHP_SELF'] ) ) ) ) // phpcs:ignore ); } elseif ( ! empty( $_SERVER['DOCUMENT_ROOT'] ) ) { $document_root = self::normalize_path( htmlspecialchars( stripslashes( $_SERVER['DOCUMENT_ROOT'] ) ) ); // phpcs:ignore } else { $document_root = ABSPATH; } $document_root = realpath( $document_root ); return $document_root; } /** * Returns absolute path to blog install dir * * Example: * * DOCUMENT_ROOT=/var/www/vhosts/domain.com * install dir=/var/www/vhosts/domain.com/site/blog * return /var/www/vhosts/domain.com/site/blog * * No trailing slash! * * @static * * @return string */ public static function site_root() { $site_root = ABSPATH; $site_root = realpath( $site_root ); $site_root = self::normalize_path( $site_root ); return $site_root; } /** * Returns blog path. * * Example: * * siteurl=http://domain.com/site/blog * return /site/blog/ * * With trailing slash! * * @static * * @return string */ public static function site_url_uri() { return self::url_to_uri( site_url() ) . '/'; } /** * Returns home domain. * * @static * * @return string */ public static function home_url_host() { $home_url = get_home_url(); $parse_url = @parse_url( $home_url ); // phpcs:ignore if ( $parse_url && isset( $parse_url['host'] ) ) { return $parse_url['host']; } return self::host(); } /** * Returns home path. * * Example: * * home=http://domain.com/site/ * siteurl=http://domain.com/site/blog * return /site/ * * With trailing slash! * * @static * * @return string */ public static function home_url_uri() { return self::url_to_uri( get_home_url() ) . '/'; } /** * Network home URL. * * @static * * @return string */ public static function network_home_url_uri() { $uri = network_home_url( '', 'relative' ); /* * There is a bug in WP where network_home_url can return * a non-relative URI even though scheme is set to relative. */ if ( self::is_url( $uri ) ) { $uri = parse_url( $uri, PHP_URL_PATH ); } if ( empty( $uri ) ) { return '/'; } return $uri; } /** * Returns server hostname with port. * * @static * * @return string */ public static function host_port() { static $host = null; if ( null === $host ) { if ( ! empty( $_SERVER['HTTP_HOST'] ) ) { // HTTP_HOST sometimes is not set causing warning. $host = htmlspecialchars( stripslashes( $_SERVER['HTTP_HOST'] ) ); // phpcs:ignore } else { $host = ''; } } return $host; } /** * Host. * * @static * * @return string */ public static function host() { $host_port = self::host_port(); $pos = strpos( $host_port, ':' ); if ( $pos === false ) { return $host_port; } return substr( $host_port, 0, $pos ); } /** * Returns WP config file path. * * @static * * @return string */ public static function wp_config_path() { $search = array( ABSPATH . 'wp-config.php', dirname( ABSPATH ) . DIRECTORY_SEPARATOR . 'wp-config.php', ); foreach ( $search as $path ) { if ( file_exists( $path ) ) { return $path; } } return false; } /** * Parses path. * * @static * * @param string $path Path. * @return mixed */ public static function parse_path( $path ) { $path = str_replace( array( '%BLOG_ID%', '%POST_ID%', '%BLOG_ID%', '%HOST%', ), array( ( isset( $GLOBALS['blog_id'] ) && is_numeric( $GLOBALS['blog_id'] ) ? (int) $GLOBALS['blog_id'] : 0 ), ( isset( $GLOBALS['post_id'] ) && is_numeric( $GLOBALS['post_id'] ) ? (int) $GLOBALS['post_id'] : 0 ), self::blog_id(), self::host(), ), $path ); return $path; } /** * Normalizes file name. * * Relative to site root! * * @static * * @param string $file File path. * @return string */ public static function normalize_file( $file ) { if ( self::is_url( $file ) ) { if ( strstr( $file, '?' ) === false ) { $home_url_regexp = '~' . self::home_url_regexp() . '~i'; $file = preg_replace( $home_url_regexp, '', $file ); } } if ( ! self::is_url( $file ) ) { $file = self::normalize_path( $file ); $file = str_replace( self::site_root(), '', $file ); $file = ltrim( $file, '/' ); } return $file; } /** * Normalizes file name for minify. * * Relative to document root! * * @static * * @param string $file * @return string */ public static function normalize_file_minify( $file ) { if ( self::is_url( $file ) ) { if ( strstr( $file, '?' ) === false ) { $domain_url_regexp = '~' . self::home_domain_root_url_regexp() . '~i'; $file = preg_replace( $domain_url_regexp, '', $file ); } } if ( ! self::is_url( $file ) ) { $file = self::normalize_path( $file ); $file = str_replace( self::document_root(), '', $file ); $file = ltrim( $file, '/' ); } return $file; } /** * Normalizes file name for minify. * Relative to document root! * * @static * * @param string $file File path. * @return string */ public static function url_to_docroot_filename( $url ) { $data = array( 'home_url' => get_home_url(), 'url' => $url, ); $data = apply_filters( 'w3tc_url_to_docroot_filename', $data ); $home_url = $data['home_url']; $normalized_url = $data['url']; $normalized_url = self::remove_query_all( $normalized_url ); // Cut protocol. $normalized_url = preg_replace( '~^http(s)?://~', '//', $normalized_url ); $home_url = preg_replace( '~^http(s)?://~', '//', $home_url ); if ( substr( $normalized_url, 0, strlen( $home_url ) ) !== $home_url ) { // Not a home url, return unchanged since cant be converted to filename. return null; } $path_relative_to_home = str_replace( $home_url, '', $normalized_url ); $home = set_url_scheme( get_option( 'home' ), 'http' ); $siteurl = set_url_scheme( get_option( 'siteurl' ), 'http' ); $home_path = rtrim( Util_Environment::site_path(), '/' ); // Adjust home_path if site is not is home. if ( ! empty( $home ) && 0 !== strcasecmp( $home, $siteurl ) ) { // $siteurl - $home/ $wp_path_rel_to_home = rtrim( str_ireplace( $home, '', $siteurl ), '/' ); if ( substr( $home_path, -strlen( $wp_path_rel_to_home ) ) == $wp_path_rel_to_home ) { $home_path = substr( $home_path, 0, -strlen( $wp_path_rel_to_home ) ); } } // Common encoded characters. $path_relative_to_home = str_replace( '%20', ' ', $path_relative_to_home ); $full_filename = $home_path . DIRECTORY_SEPARATOR . trim( $path_relative_to_home, DIRECTORY_SEPARATOR ); $docroot = self::document_root(); if ( substr( $full_filename, 0, strlen( $docroot ) ) == $docroot ) { $docroot_filename = substr( $full_filename, strlen( $docroot ) ); } else { $docroot_filename = $path_relative_to_home; } /* * Sometimes urls (coming from other plugins/themes) * contain multiple "/" like "my-folder//myfile.js" which * fails to recognize by filesystem, while url is accessible. */ $docroot_filename = str_replace( '//', DIRECTORY_SEPARATOR, $docroot_filename ); return ltrim( $docroot_filename, DIRECTORY_SEPARATOR ); } /** * Document root to full filename. * * @static * * @param string $docroot_filename Document filename. * @return strin */ public static function docroot_to_full_filename( $docroot_filename ) { return rtrim( Util_Environment::document_root(), DIRECTORY_SEPARATOR ) . DIRECTORY_SEPARATOR . $docroot_filename; } /** * Removes WP query string from URL. * * @static */ public static function remove_query( $url ) { $url = preg_replace( '~(\?|&|&|&)+ver=[a-z0-9-_\.]+~i', '', $url ); return $url; } /** * Removes all query strings from url. * * @static * * @param string $url URL. * @return string */ public static function remove_query_all( $url ) { $pos = strpos( $url, '?' ); if ( $pos === false ) { return $url; } return substr( $url, 0, $pos ); } /** * Converts win path to unix. * * @static * * @param string $path Path. * @return string */ public static function normalize_path( $path ) { $path = preg_replace( '~[/\\\]+~', '/', $path ); $path = rtrim( $path, '/' ); return $path; } /** * Returns real path of given path. * * @static * * @param string $path Path. * @return string */ public static function realpath( $path ) { $path = self::normalize_path( $path ); $parts = explode( '/', $path ); $absolutes = array(); foreach ( $parts as $part ) { if ( '.' == $part ) { continue; } if ( '..' == $part ) { array_pop( $absolutes ); } else { $absolutes[] = $part; } } return implode( '/', $absolutes ); } /** * Returns real path of given path. * * @static * * @param string $path Path. * @return string */ public static function path_remove_dots( $path ) { $parts = explode( '/', $path ); $absolutes = array(); foreach ( $parts as $part ) { if ( '.' == $part ) { continue; } if ( '..' == $part ) { array_pop( $absolutes ); } else { $absolutes[] = $part; } } return implode( '/', $absolutes ); } /** * Returns full URL from relative one. * * @static * * @param string $relative_url Relative URL. * @return string */ public static function url_relative_to_full( $relative_url ) { $relative_url = self::path_remove_dots( $relative_url ); if ( version_compare( PHP_VERSION, '5.4.7' ) < 0 ) { if ( substr( $relative_url, 0, 2 ) === '//' ) { $relative_url = ( self::is_https() ? 'https' : 'http' ) . ':' . $relative_url; } } $rel = parse_url( $relative_url ); // it's full url already if ( isset( $rel['scheme'] ) || isset( $rel['host'] ) ) return $relative_url; if ( !isset( $rel['host'] ) ) { $home_parsed = parse_url( get_home_url() ); $rel['host'] = $home_parsed['host']; if ( isset( $home_parsed['port'] ) ) { $rel['port'] = $home_parsed['port']; } } $scheme = isset( $rel['scheme'] ) ? $rel['scheme'] . '://' : '//'; $host = isset( $rel['host'] ) ? $rel['host'] : ''; $port = isset( $rel['port'] ) ? ':' . $rel['port'] : ''; $path = isset( $rel['path'] ) ? $rel['path'] : ''; $query = isset( $rel['query'] ) ? '?' . $rel['query'] : ''; return "$scheme$host$port$path$query"; } /** * Redirects to URL. * * @static * * @param string $url URL. * @param array $params Parameters. */ public static function redirect( $url = '', $params = array() ) { $url = self::url_format( $url, $params ); if ( function_exists( 'do_action' ) ) { do_action( 'w3tc_redirect' ); } @header( 'Location: ' . $url ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged exit(); } /** * Redirects to URL. * * @static * * @param string $url URL. * @param array $params Parameters. * @param bool $safe_redirect Safe redirect or not. */ public static function safe_redirect_temp( $url = '', $params = array(), $safe_redirect = false ) { $url = self::url_format( $url, $params ); if ( function_exists( 'do_action' ) ) { do_action( 'w3tc_redirect' ); } $status_code = 302; $protocol = isset( $_SERVER['SERVER_PROTOCOL'] ) ? htmlspecialchars( stripslashes( $_SERVER['SERVER_PROTOCOL'] ) ) : ''; // phpcs:ignore if ( 'HTTP/1.1' === $protocol ) { $status_code = 307; } $text = get_status_header_desc( $status_code ); if ( ! empty( $text ) ) { $status_header = "$protocol $status_code $text"; @header( $status_header, true, $status_code ); } add_action( 'wp_safe_redirect_fallback', array( '\W3TC\Util_Environment', 'wp_safe_redirect_fallback' ) ); @header( 'Cache-Control: no-cache' ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged wp_safe_redirect( $url, $status_code ); exit(); } /** * Fallback for wp_sfe_redirect(). * * @static * * @param string $url URL. * @return string */ public static function wp_safe_redirect_fallback( $url ) { return home_url( '?w3tc_repeat=invalid' ); } /** * Detects post ID. * * @static * * @return int */ public static function detect_post_id() { global $posts, $comment_post_ID, $post_ID; // phpcs:ignore WordPress.NamingConventions.ValidVariableName.VariableNotSnakeCase $p_val = Util_Request::get_integer( 'p' ); if ( $post_ID ) { return $post_ID; } elseif ( $comment_post_ID ) { // phpcs:ignore WordPress.NamingConventions.ValidVariableName.VariableNotSnakeCase return $comment_post_ID; // phpcs:ignore WordPress.NamingConventions.ValidVariableName.VariableNotSnakeCase } elseif ( ( is_single() || is_page() ) && is_array( $posts ) && isset( $posts[0]->ID ) ) { return $posts[0]->ID; } elseif ( isset( $posts->ID ) ) { return $posts->ID; } elseif ( ! empty( $p_val ) ) { return $p_val; } return 0; } /** * Get W3TC instance id. * * @static * * @return int */ public static function instance_id() { if ( defined( 'W3TC_INSTANCE_ID' ) ) { return W3TC_INSTANCE_ID; } static $instance_id; if ( ! isset( $instance_id ) ) { $config = Dispatcher::config(); $instance_id = $config->get_integer( 'common.instance_id', 0 ); } return $instance_id; } /** * Get W3TC edition. * * @static * * @param Config $config Config. * @return string */ public static function w3tc_edition( $config = null ) { if ( self::is_w3tc_pro( $config ) && self::is_w3tc_pro_dev() ) { return 'pro development'; } if ( self::is_w3tc_pro( $config ) ) { return 'pro'; } return 'community'; } /** * Is W3TC Pro. * * @static * * @param Config $config Config. * @return bool */ public static function is_w3tc_pro( $config = null ) { if ( defined( 'W3TC_PRO' ) && W3TC_PRO ) { return true; } if ( defined( 'W3TC_ENTERPRISE' ) && W3TC_ENTERPRISE ) { return true; } if ( is_object( $config ) ) { $plugin_type = $config->get_string( 'plugin.type' ); if ( 'pro' === $plugin_type || 'pro_dev' === $plugin_type ) { return true; } } return false; } /** * Enable Pro Dev mode support. * * @static * * @return bool */ public static function is_w3tc_pro_dev() { return defined( 'W3TC_PRO_DEV_MODE' ) && W3TC_PRO_DEV_MODE; } /** * Quotes regular expression string. * * @static * * @param string $string String. * @param string $delimiter Delimeter. * @return string */ public static function preg_quote( $string, $delimiter = '~' ) { $string = preg_quote( $string, $delimiter ); $string = strtr( $string, array( ' ' => '\ ' ) ); return $string; } /** * Returns true if zlib output compression is enabled otherwise false. * * @static * * @return bool */ public static function is_zlib_enabled() { return self::to_boolean( ini_get( 'zlib.output_compression' ) ); } /** * Recursive strips slahes from the var. * * @static * * @param mixed $var Value. * @return mixed */ public static function stripslashes( $var ) { if ( is_string( $var ) ) { return stripslashes( $var ); } elseif ( is_array( $var ) ) { $var = array_map( array( '\W3TC\Util_Environment', 'stripslashes' ), $var ); } return $var; } /** * Checks if post should be flushed or not. Returns true if it should not be flushed. * * @static * * @param object $post Post object. * @param string $module Which cache module to check against (pgcache, varnish, dbcache or objectcache). * @param Config $config Config. * @return bool */ public static function is_flushable_post( $post, $module, $config ) { if ( is_numeric( $post ) ) { $post = get_post( $post ); } $post_status = array( 'publish' ); /** * Dont flush when we have post "attachment" * its child of the post and is flushed always when post is published, while not changed in fact. */ $post_type = array( 'revision', 'attachment' ); switch ( $module ) { case 'pgcache': case 'varnish': case 'posts': // Means html content of post pages. if ( ! $config->get_boolean( 'pgcache.reject.logged' ) ) { $post_status[] = 'private'; } break; case 'dbcache': if ( ! $config->get_boolean( 'dbcache.reject.logged' ) ) { $post_status[] = 'private'; } break; } $flushable = is_object( $post ) && ! in_array( $post->post_type, $post_type, true ) && in_array( $post->post_status, $post_status, true ); return apply_filters( 'w3tc_flushable_post', $flushable, $post, $module ); } /** * Checks if post belongs to a custom post type. * * @since 2.1.7 * @static * * @param object $post Post object. * @return bool */ public static function is_custom_post_type( $post ) { $post_type = get_post_type_object( $post->post_type ); // post type not found belongs to default post type(s). if ( empty( $post_type ) ) { return false; } // check if custom. if ( false === $post_type->_builtin ) { return true; } return false; } /** * Converts value to boolean. * * @static * * @param mixed $value Value. * @return bool */ public static function to_boolean( $value ) { if ( is_string( $value ) ) { switch ( strtolower( $value ) ) { case '+': case '1': case 'y': case 'on': case 'yes': case 'true': case 'enabled': return true; case '-': case '0': case 'n': case 'no': case 'off': case 'false': case 'disabled': return false; } } return (boolean) $value; } /** * Returns the apache, nginx version. * * @static * * @return string */ public static function get_server_version() { $sig = explode( '/', isset( $_SERVER['SERVER_SOFTWARE'] ) ? htmlspecialchars( stripslashes( $_SERVER['SERVER_SOFTWARE'] ) ) : '' // phpcs:ignore ); $temp = isset( $sig[1] ) ? explode( ' ', $sig[1] ) : array( '0' ); $version = $temp[0]; return $version; } /** * Checks if current request is REST REQUEST. * * @static */ public static function is_rest_request( $url ) { if ( defined( 'REST_REQUEST' ) && REST_REQUEST ) return true; // in case when called before constant is set // wp filters are not available in that case return preg_match( '~' . W3TC_WP_JSON_URI . '~', $url ); } /** * Reset microcache. * * @static */ public static function reset_microcache() { global $w3_current_blog_id; $w3_current_blog_id = null; self::$is_using_master_config = null; } /** * Removes blank lines, trim values, removes duplicates, and sorts array. * * @since 2.4.3 * * @param array $values Array of values. * * @return array */ public static function clean_array( $values ) { if ( ! empty( $values ) && is_array( $values ) ) { $values = array_unique( array_filter( array_map( 'trim', $values ), 'strlen' ) ); sort( $values ); } return $values; } /** * Parses textarea setting value from string to array. * * @since 2.4.3 * * @param string $value Value. * * @return array */ public static function textarea_to_array( $value ) { $values_array = array(); if ( ! empty( $value ) ) { $values_array = self::clean_array( preg_split( '/\R/', $value, 0, PREG_SPLIT_NO_EMPTY ) ); } return $values_array; } }