/wp-content/plugins/w3-total-cache/inc/define.php
PHP | 1244 lines | 647 code | 189 blank | 408 comment | 103 complexity | de0586a2a5cb46b5f31e03c732a98f64 MD5 | raw file
- <?php
- if (!defined('ABSPATH')) {
- die();
- }
- define('W3TC', true);
- define('W3TC_VERSION', '0.9.2.4');
- define('W3TC_POWERED_BY', 'W3 Total Cache/' . W3TC_VERSION);
- define('W3TC_EMAIL', 'w3tc@w3-edge.com');
- define('W3TC_PAYPAL_URL', 'https://www.paypal.com/cgi-bin/webscr');
- define('W3TC_PAYPAL_BUSINESS', 'w3tc-team@w3-edge.com');
- define('W3TC_LINK_URL', 'http://www.w3-edge.com/wordpress-plugins/');
- define('W3TC_LINK_NAME', 'WordPress Plugins');
- define('W3TC_FEED_URL', 'http://feeds.feedburner.com/W3TOTALCACHE');
- define('W3TC_README_URL', 'http://plugins.trac.wordpress.org/browser/w3-total-cache/trunk/readme.txt?format=txt');
- define('W3TC_SUPPORT_US_TIMEOUT', 2592000);
- define('W3TC_PHP5', PHP_VERSION >= 5);
- define('W3TC_WIN', (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN'));
- defined('W3TC_DIR') || define('W3TC_DIR', realpath(dirname(__FILE__) . '/..'));
- define('W3TC_FILE', 'w3-total-cache/w3-total-cache.php');
- define('W3TC_INC_DIR', W3TC_DIR . '/inc');
- define('W3TC_LIB_DIR', W3TC_DIR . '/lib');
- define('W3TC_LIB_W3_DIR', W3TC_LIB_DIR . '/W3');
- define('W3TC_LIB_MINIFY_DIR', W3TC_LIB_DIR . '/Minify');
- define('W3TC_LIB_CF_DIR', W3TC_LIB_DIR . '/CF');
- define('W3TC_LIB_CSSTIDY_DIR', W3TC_LIB_DIR . '/CSSTidy');
- define('W3TC_LIB_MICROSOFT_DIR', W3TC_LIB_DIR . '/Microsoft');
- define('W3TC_LIB_NUSOAP_DIR', W3TC_LIB_DIR . '/Nusoap');
- define('W3TC_PLUGINS_DIR', W3TC_DIR . '/plugins');
- define('W3TC_INSTALL_DIR', W3TC_DIR . '/wp-content');
- define('W3TC_INSTALL_MINIFY_DIR', W3TC_INSTALL_DIR . '/w3tc/min');
- define('W3TC_BLOGNAMES_PATH', WP_CONTENT_DIR . '/w3-total-cache-blognames.php');
- define('W3TC_BLOGNAME', w3_get_blogname());
- define('W3TC_SUFFIX', (W3TC_BLOGNAME != '' ? '-' . W3TC_BLOGNAME : ''));
- defined('WP_CONTENT_DIR') || define('WP_CONTENT_DIR', realpath(W3TC_DIR . '/../..'));
- define('WP_CONTENT_DIR_PATH', dirname(WP_CONTENT_DIR));
- define('WP_CONTENT_DIR_NAME', basename(WP_CONTENT_DIR));
- define('W3TC_CONTENT_DIR_NAME', WP_CONTENT_DIR_NAME . '/w3tc' . W3TC_SUFFIX);
- define('W3TC_CONTENT_DIR', WP_CONTENT_DIR_PATH . '/' . W3TC_CONTENT_DIR_NAME);
- define('W3TC_CONTENT_MINIFY_DIR_NAME', W3TC_CONTENT_DIR_NAME . '/min');
- define('W3TC_CONTENT_MINIFY_DIR', WP_CONTENT_DIR_PATH . '/' . W3TC_CONTENT_DIR_NAME . '/min');
- define('W3TC_CACHE_FILE_DBCACHE_DIR', W3TC_CONTENT_DIR . '/dbcache');
- define('W3TC_CACHE_FILE_OBJECTCACHE_DIR', W3TC_CONTENT_DIR . '/objectcache');
- define('W3TC_CACHE_FILE_PGCACHE_DIR', W3TC_CONTENT_DIR . '/pgcache');
- define('W3TC_CACHE_FILE_MINIFY_DIR', W3TC_CONTENT_DIR . '/min');
- define('W3TC_LOG_DIR', W3TC_CONTENT_DIR . '/log');
- define('W3TC_TMP_DIR', W3TC_CONTENT_DIR . '/tmp');
- define('W3TC_CONFIG_PATH', WP_CONTENT_DIR . '/w3-total-cache-config' . W3TC_SUFFIX . '.php');
- define('W3TC_CONFIG_PREVIEW_PATH', WP_CONTENT_DIR . '/w3-total-cache-config' . W3TC_SUFFIX . '-preview.php');
- define('W3TC_CONFIG_MASTER_PATH', WP_CONTENT_DIR . '/w3-total-cache-config.php');
- define('W3TC_MINIFY_LOG_FILE', W3TC_LOG_DIR . '/minify.log');
- define('W3TC_CDN_COMMAND_UPLOAD', 1);
- define('W3TC_CDN_COMMAND_DELETE', 2);
- define('W3TC_CDN_COMMAND_PURGE', 3);
- define('W3TC_CDN_TABLE_QUEUE', 'w3tc_cdn_queue');
- define('W3TC_CDN_LOG_FILE', W3TC_LOG_DIR . '/cdn.log');
- define('W3TC_VARNISH_LOG_FILE', W3TC_LOG_DIR . '/varnish.log');
- define('W3TC_MARKER_BEGIN_WORDPRESS', '# BEGIN WordPress');
- define('W3TC_MARKER_BEGIN_PGCACHE_CORE', '# BEGIN W3TC Page Cache core');
- define('W3TC_MARKER_BEGIN_PGCACHE_CACHE', '# BEGIN W3TC Page Cache cache');
- define('W3TC_MARKER_BEGIN_PGCACHE_LEGACY', '# BEGIN W3TC Page Cache');
- define('W3TC_MARKER_BEGIN_PGCACHE_WPSC', '# BEGIN WPSuperCache');
- define('W3TC_MARKER_BEGIN_BROWSERCACHE_CACHE', '# BEGIN W3TC Browser Cache');
- define('W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP', '# BEGIN W3TC Skip 404 error handling by WordPress for static files');
- define('W3TC_MARKER_BEGIN_MINIFY_CORE', '# BEGIN W3TC Minify core');
- define('W3TC_MARKER_BEGIN_MINIFY_CACHE', '# BEGIN W3TC Minify cache');
- define('W3TC_MARKER_BEGIN_MINIFY_LEGACY', '# BEGIN W3TC Minify');
- define('W3TC_MARKER_END_WORDPRESS', '# END WordPress');
- define('W3TC_MARKER_END_PGCACHE_CORE', '# END W3TC Page Cache core');
- define('W3TC_MARKER_END_PGCACHE_CACHE', '# END W3TC Page Cache cache');
- define('W3TC_MARKER_END_PGCACHE_LEGACY', '# END W3TC Page Cache');
- define('W3TC_MARKER_END_PGCACHE_WPSC', '# END WPSuperCache');
- define('W3TC_MARKER_END_BROWSERCACHE_CACHE', '# END W3TC Browser Cache');
- define('W3TC_MARKER_END_BROWSERCACHE_NO404WP', '# END W3TC Skip 404 error handling by WordPress for static files');
- define('W3TC_MARKER_END_MINIFY_CORE', '# END W3TC Minify core');
- define('W3TC_MARKER_END_MINIFY_CACHE', '# END W3TC Minify cache');
- define('W3TC_MARKER_END_MINIFY_LEGACY', '# END W3TC Minify');
- define('W3TC_INSTALL_FILE_ADVANCED_CACHE', W3TC_INSTALL_DIR . '/advanced-cache.php');
- define('W3TC_INSTALL_FILE_DB', W3TC_INSTALL_DIR . '/db.php');
- define('W3TC_INSTALL_FILE_OBJECT_CACHE', W3TC_INSTALL_DIR . '/object-cache.php');
- define('W3TC_ADDIN_FILE_ADVANCED_CACHE', WP_CONTENT_DIR . '/advanced-cache.php');
- define('W3TC_ADDIN_FILE_DB', WP_CONTENT_DIR . '/db.php');
- define('W3TC_ADDIN_FILE_OBJECT_CACHE', WP_CONTENT_DIR . '/object-cache.php');
- require_once W3TC_INC_DIR . '/functions/compat.php';
- require_once W3TC_INC_DIR . '/functions/plugin.php';
- @ini_set('pcre.backtrack_limit', 4194304);
- @ini_set('pcre.recursion_limit', 4194304);
- /**
- * Returns current microtime
- *
- * @return double
- */
- function w3_microtime() {
- list ($usec, $sec) = explode(' ', microtime());
- return ((double) $usec + (double) $sec);
- }
- /**
- * Check if content is HTML or XML
- *
- * @param string $content
- * @return boolean
- */
- function w3_is_xml($content) {
- if (strlen($content) > 1000) {
- $content = substr($content, 0, 1000);
- }
- if (strstr($content, '<!--') !== false) {
- $content = preg_replace('~<!--.*?-->~s', '', $content);
- }
- $content = ltrim($content, "\x00\x09\x0A\x0D\x20\xBB\xBF\xEF");
- return (stripos($content, '<?xml') === 0 || stripos($content, '<html') === 0 || stripos($content, '<!DOCTYPE') === 0);
- }
- /**
- * Returns true if it's WPMU
- *
- * @return boolean
- */
- function w3_is_wpmu() {
- static $wpmu = null;
- if ($wpmu === null) {
- $wpmu = file_exists(ABSPATH . 'wpmu-settings.php');
- }
- return $wpmu;
- }
- /**
- * Returns true if WPMU uses vhosts
- *
- * @return boolean
- */
- function w3_is_subdomain_install() {
- return ((defined('SUBDOMAIN_INSTALL') && SUBDOMAIN_INSTALL) || (defined('VHOST') && VHOST == 'yes'));
- }
- /**
- * Returns true if it's WP with enabled Network mode
- *
- * @return boolean
- */
- function w3_is_multisite() {
- static $multisite = null;
- if ($multisite === null) {
- $multisite = ((defined('MULTISITE') && MULTISITE) || defined('SUNRISE') || w3_is_subdomain_install());
- }
- return $multisite;
- }
- /**
- * Returns if there is multisite mode
- *
- * @return boolean
- */
- function w3_is_network() {
- return (w3_is_wpmu() || w3_is_multisite());
- }
- /**
- * Check if URL is valid
- *
- * @param string $url
- * @return boolean
- */
- function w3_is_url($url) {
- return preg_match('~^(https?:)?//~', $url);
- }
- /**
- * Returns true if current connection is secure
- *
- * @return boolean
- */
- function w3_is_https() {
- switch (true) {
- case (isset($_SERVER['HTTPS']) && w3_to_boolean($_SERVER['HTTPS'])):
- case (isset($_SERVER['SERVER_PORT']) && (int) $_SERVER['SERVER_PORT'] == 443):
- return true;
- }
- return false;
- }
- /**
- * Check if there was database error
- *
- * @param string $content
- * @return boolean
- */
- function w3_is_database_error(&$content) {
- return (stristr($content, '<title>Database Error</title>') !== false);
- }
- /**
- * Returns true if preview config exists
- *
- * @return boolean
- */
- function w3_is_preview_config() {
- return file_exists(W3TC_CONFIG_PREVIEW_PATH);
- }
- /**
- * Retuns true if preview settings active
- *
- * @return boolean
- */
- function w3_is_preview_mode() {
- return (w3_is_preview_config() && (defined('WP_ADMIN') || isset($_REQUEST['w3tc_preview']) || (isset($_SERVER['HTTP_REFERER']) && strstr($_SERVER['HTTP_REFERER'], 'w3tc_preview') !== false)));
- }
- /**
- * Returns true if server is Apache
- *
- * @return boolean
- */
- function w3_is_apache() {
- return (isset($_SERVER['SERVER_SOFTWARE']) && stristr($_SERVER['SERVER_SOFTWARE'], 'Apache') !== false);
- }
- /**
- * Check whether server is LiteSpeed
- *
- * @return bool
- */
- function w3_is_litespeed() {
- return (isset($_SERVER['SERVER_SOFTWARE']) && stristr($_SERVER['SERVER_SOFTWARE'], 'LiteSpeed') !== false);
- }
- /**
- * Returns true if server is nginx
- *
- * @return boolean
- */
- function w3_is_nginx() {
- return (isset($_SERVER['SERVER_SOFTWARE']) && stristr($_SERVER['SERVER_SOFTWARE'], 'nginx') !== false);
- }
- /**
- * Check whether $engine is correct CDN engine
- *
- * @param string $engine
- * @return boolean
- */
- function w3_is_cdn_engine($engine) {
- return in_array($engine, array('ftp', 's3', 'cf', 'cf2', 'rscf', 'azure', 'mirror', 'netdna', 'cotendo', 'edgecast'));
- }
- /**
- * Returns true if CDN engine is mirror
- *
- * @param string $engine
- * @return bool
- */
- function w3_is_cdn_mirror($engine) {
- return in_array($engine, array('mirror', 'netdna', 'cotendo', 'cf2', 'edgecast'));
- }
- /**
- * Returns domain from host
- *
- * @param string $host
- * @return string
- */
- function w3_get_domain($host) {
- $host = strtolower($host);
- if (strpos($host, 'www.') === 0) {
- $host = substr($host, 4);
- }
- if (($pos = strpos($host, ':')) !== false) {
- $host = substr($host, 0, $pos);
- }
- $host = rtrim($host, '.');
- return $host;
- }
- /**
- * Returns array of all available blognames
- *
- * @return array
- */
- function w3_get_blognames() {
- global $wpdb;
- $blognames = array();
- $sql = sprintf('SELECT domain, path FROM %s', $wpdb->blogs);
- $blogs = $wpdb->get_results($sql);
- if ($blogs) {
- $base_path = w3_get_base_path();
- foreach ($blogs as $blog) {
- $blogname = trim(str_replace($base_path, '', $blog->path), '/');
- if ($blogname) {
- $blognames[] = $blogname;
- }
- }
- }
- return $blognames;
- }
- /**
- * Load blognames from file
- *
- * @return array
- */
- function w3_load_blognames() {
- $blognames = include W3TC_BLOGNAMES_PATH;
- return $blognames;
- }
- /**
- * Save blognames into file
- *
- * @param string $blognames
- * @return boolean
- */
- function w3_save_blognames($blognames = null) {
- if (!$blognames) {
- $blognames = w3_get_blognames();
- }
- $strings = array();
- foreach ($blognames as $blogname) {
- $strings[] = sprintf("'%s'", addslashes($blogname));
- }
- $data = sprintf('<?php return array(%s);', implode(', ', $strings));
- return @file_put_contents(W3TC_BLOGNAMES_PATH, $data);
- }
- /**
- * Detect WPMU blogname
- *
- * @return string
- */
- function w3_get_blogname() {
- static $blogname = null;
- if ($blogname === null) {
- if (w3_is_network()) {
- $host = w3_get_host();
- $domain = w3_get_domain($host);
- if (w3_is_subdomain_install()) {
- $blogname = $domain;
- } else {
- $uri = $_SERVER['REQUEST_URI'];
- $base_path = w3_get_base_path();
- if ($base_path != '' && strpos($uri, $base_path) === 0) {
- $uri = substr_replace($uri, '/', 0, strlen($base_path));
- }
- $blogname = w3_get_blogname_from_uri($uri);
- if ($blogname != '') {
- $blogname = $blogname . '.' . $domain;
- } else {
- $blogname = $domain;
- }
- }
- } else {
- $blogname = '';
- }
- }
- return $blogname;
- }
- /**
- * Returns blogname from URI
- *
- * @param string $uri
- * @return string
- */
- function w3_get_blogname_from_uri($uri) {
- $blogname = '';
- $matches = null;
- $uri = strtolower($uri);
- if (preg_match('~^/([a-z0-9-]+)/~', $uri, $matches)) {
- if (file_exists(W3TC_BLOGNAMES_PATH)) {
- // Get blognames from cache
- $blognames = w3_load_blognames();
- } elseif (isset($GLOBALS['wpdb'])) {
- // Get blognames from DB
- $blognames = w3_get_blognames();
- } else {
- $blognames = array();
- }
- if (is_array($blognames) && in_array($matches[1], $blognames)) {
- $blogname = $matches[1];
- }
- }
- return $blogname;
- }
- /**
- * Returns current blog ID
- *
- * @return integer
- */
- function w3_get_blog_id() {
- return (isset($GLOBALS['blog_id']) ? (int) $GLOBALS['blog_id'] : 0);
- }
- /**
- * Returns URL regexp from URL
- *
- * @param string $url
- * @return string
- */
- function w3_get_url_regexp($url) {
- $url = preg_replace('~(https?:)?//~i', '', $url);
- $url = preg_replace('~^www\.~i', '', $url);
- $regexp = '(https?:)?//(www\.)?' . w3_preg_quote($url);
- return $regexp;
- }
- /**
- * Returns SSL URL if current connection is https
- * @param string $url
- * @return string
- */
- function w3_get_url_ssl($url) {
- if (w3_is_https()) {
- $url = str_replace('http://', 'https://', $url);
- }
- return $url;
- }
- /**
- * Get domain URL
- *
- * @return string
- */
- function w3_get_domain_url() {
- $home_url = w3_get_home_url();
- $parse_url = @parse_url($home_url);
- if ($parse_url && isset($parse_url['scheme']) && isset($parse_url['host'])) {
- $scheme = $parse_url['scheme'];
- $host = $parse_url['host'];
- $port = (isset($parse_url['port']) && $parse_url['port'] != 80 ? ':' . (int) $parse_url['port'] : '');
- $domain_url = sprintf('%s://%s%s', $scheme, $host, $port);
- return $domain_url;
- }
- return false;
- }
- /**
- * Returns domain url regexp
- *
- * @return string
- */
- function w3_get_domain_url_regexp() {
- $domain_url = w3_get_domain_url();
- $regexp = w3_get_url_regexp($domain_url);
- return $regexp;
- }
- /**
- * Returns home URL
- *
- * No trailing slash!
- *
- * @return string
- */
- function w3_get_home_url() {
- static $home_url = null;
- if ($home_url === null) {
- $home_url = get_option('home');
- $home_url = rtrim($home_url, '/');
- }
- return $home_url;
- }
- /**
- * Returns SSL home url
- *
- * @return string
- */
- function w3_get_home_url_ssl() {
- $home_url = w3_get_home_url();
- $ssl = w3_get_url_ssl($home_url);
- return $ssl;
- }
- /**
- * Returns home url regexp
- *
- * @return string
- */
- function w3_get_home_url_regexp() {
- $home_url = w3_get_home_url();
- $regexp = w3_get_url_regexp($home_url);
- return $regexp;
- }
- /**
- * Returns site URL
- *
- * No trailing slash!
- *
- * @return string
- */
- function w3_get_site_url() {
- static $site_url = null;
- if ($site_url === null) {
- $site_url = get_option('siteurl');
- $site_url = rtrim($site_url, '/');
- }
- return $site_url;
- }
- /**
- * Returns SSL site URL
- *
- * @return string
- */
- function w3_get_site_url_ssl() {
- $site_url = w3_get_site_url();
- $ssl = w3_get_url_ssl($site_url);
- return $ssl;
- }
- /**
- * Returns absolute path to document root
- *
- * No trailing slash!
- *
- * @return string
- */
- function w3_get_document_root() {
- static $document_root = null;
- if ($document_root === null) {
- if (!empty($_SERVER['SCRIPT_FILENAME'])) {
- $document_root = substr(w3_path($_SERVER['SCRIPT_FILENAME']), 0, -strlen(w3_path($_SERVER['PHP_SELF'])));
- } elseif (!empty($_SERVER['PATH_TRANSLATED'])) {
- $document_root = substr(w3_path($_SERVER['PATH_TRANSLATED']), 0, -strlen(w3_path($_SERVER['PHP_SELF'])));
- } elseif (!empty($_SERVER['DOCUMENT_ROOT'])) {
- $document_root = w3_path($_SERVER['DOCUMENT_ROOT']);
- } else {
- $document_root = w3_get_site_root();
- }
- $document_root = realpath($document_root);
- $document_root = w3_path($document_root);
- }
- return $document_root;
- }
- /**
- * Returns absolute path to home directory
- *
- * Example:
- *
- * DOCUMENT_ROOT=/var/www/vhosts/domain.com
- * Install dir=/var/www/vhosts/domain.com/site/blog
- * home=http://domain.com/site
- * siteurl=http://domain.com/site/blog
- * return /var/www/vhosts/domain.com/site
- *
- * No trailing slash!
- *
- * @return string
- */
- function w3_get_home_root() {
- if (w3_is_network()) {
- $path = w3_get_base_path();
- } else {
- $path = w3_get_home_path();
- }
- $home_root = w3_get_document_root() . $path;
- $home_root = realpath($home_root);
- $home_root = w3_path($home_root);
- return $home_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!
- *
- * @return string
- */
- function w3_get_site_root() {
- $site_root = ABSPATH;
- $site_root = realpath($site_root);
- $site_root = w3_path($site_root);
- return $site_root;
- }
- /**
- * Returns blog path
- *
- * Example:
- *
- * siteurl=http://domain.com/site/blog
- * return /site/blog/
- *
- * With trailing slash!
- *
- * @return string
- */
- function w3_get_site_path() {
- $site_url = w3_get_site_url();
- $parse_url = @parse_url($site_url);
- if ($parse_url && isset($parse_url['path'])) {
- $site_path = '/' . ltrim($parse_url['path'], '/');
- } else {
- $site_path = '/';
- }
- if (substr($site_path, -1) != '/') {
- $site_path .= '/';
- }
- return $site_path;
- }
- /**
- * Returns home domain
- *
- * @return string
- */
- function w3_get_home_domain() {
- $home_url = w3_get_home_url();
- $parse_url = @parse_url($home_url);
- if ($parse_url && isset($parse_url['host'])) {
- return $parse_url['host'];
- }
- return w3_get_host();
- }
- /**
- * Returns home path
- *
- * Example:
- *
- * home=http://domain.com/site/
- * siteurl=http://domain.com/site/blog
- * return /site/
- *
- * With trailing slash!
- *
- * @return string
- */
- function w3_get_home_path() {
- $home_url = w3_get_home_url();
- $parse_url = @parse_url($home_url);
- if ($parse_url && isset($parse_url['path'])) {
- $home_path = '/' . ltrim($parse_url['path'], '/');
- } else {
- $home_path = '/';
- }
- if (substr($home_path, -1) != '/') {
- $home_path .= '/';
- }
- return $home_path;
- }
- /**
- * Returns path to WP directory relative to document root
- *
- * Example:
- *
- * DOCUMENT_ROOT=/var/www/vhosts/domain.com/
- * Install dir=/var/www/vhosts/domain.com/site/blog/
- * return /site/blog/
- *
- * With trailing slash!
- *
- * @return string
- */
- function w3_get_base_path() {
- $document_root = w3_get_document_root();
- $site_root = w3_get_site_root();
- $base_path = str_replace($document_root, '', $site_root);
- $base_path = '/' . ltrim($base_path, '/');
- if (substr($base_path, -1) != '/') {
- $base_path .= '/';
- }
- return $base_path;
- }
- /**
- * Returns server hostname
- *
- * @return string
- */
- function w3_get_host() {
- static $host = null;
- if ($host === null) {
- $host = (!empty($_SERVER['HTTP_X_FORWARDED_HOST']) ? $_SERVER['HTTP_X_FORWARDED_HOST'] : $_SERVER['HTTP_HOST']);
- }
- return $host;
- }
- /**
- * Returns host ID
- *
- * @return string
- */
- function w3_get_host_id() {
- static $host_id = null;
- if ($host_id === null) {
- $host = w3_get_host();
- $blog_id = w3_get_blog_id();
- $host_id = sprintf('%s_%d', $host, $blog_id);
- }
- return $host_id;
- }
- /**
- * Returns WP config file path
- *
- * @return string
- */
- function w3_get_wp_config_path() {
- $search = array(
- ABSPATH . 'wp-config.php',
- dirname(ABSPATH) . '/wp-config.php'
- );
- foreach ($search as $path) {
- if (file_exists($path)) {
- return $path;
- }
- }
- return false;
- }
- /**
- * Returns theme key
- *
- * @param string $theme_root
- * @param string $template
- * @param string $stylesheet
- * @return string
- */
- function w3_get_theme_key($theme_root, $template, $stylesheet) {
- $site_root = w3_get_site_root();
- $theme_path = ltrim(str_replace($site_root, '', w3_path($theme_root)), '/');
- return substr(md5($theme_path . $template . $stylesheet), 0, 5);
- }
- /**
- * Returns theme key (legacy support)
- *
- * @param string $theme_root
- * @param string $template
- * @param string $stylesheet
- * @return string
- */
- function w3_get_theme_key_legacy($theme_root, $template, $stylesheet) {
- return substr(md5($theme_root . $template . $stylesheet), 0, 6);
- }
- /**
- * Returns true if we can check rules
- *
- * @return bool
- */
- function w3_can_check_rules() {
- return (w3_is_apache() || w3_is_litespeed() || w3_is_nginx());
- }
- /**
- * Returns true if CDN engine is supporting purge
- *
- * @param string $engine
- * @return bool
- */
- function w3_can_cdn_purge($engine) {
- return in_array($engine, array('ftp', 's3', 'cf', 'cf2', 'rscf', 'azure', 'netdna', 'cotendo', 'edgecast'));
- }
- /**
- * Parses path
- *
- * @param string $path
- * @return mixed
- */
- function w3_parse_path($path) {
- $path = str_replace(array(
- '%BLOG_ID%',
- '%POST_ID%',
- '%BLOGNAME%',
- '%HOST%',
- '%DOMAIN%',
- '%BASE_PATH%'
- ), array(
- (isset($GLOBALS['blog_id']) ? (int) $GLOBALS['blog_id'] : 0),
- (isset($GLOBALS['post_id']) ? (int) $GLOBALS['post_id'] : 0),
- w3_get_blogname(),
- w3_get_host(),
- w3_get_domain(w3_get_host()),
- trim(w3_get_base_path(), '/')
- ), $path);
- return $path;
- }
- /**
- * Normalizes file name
- *
- * Relative to site root!
- *
- * @param string $file
- * @return string
- */
- function w3_normalize_file($file) {
- if (w3_is_url($file)) {
- if (strstr($file, '?') === false) {
- $home_url_regexp = '~' . w3_get_home_url_regexp() . '~i';
- $file = preg_replace($home_url_regexp, '', $file);
- }
- }
- if (!w3_is_url($file)) {
- $file = w3_path($file);
- $file = str_replace(w3_get_site_root(), '', $file);
- $file = ltrim($file, '/');
- }
- return $file;
- }
- /**
- * Normalizes file name for minify
- *
- * Relative to document root!
- *
- * @param string $file
- * @return string
- */
- function w3_normalize_file_minify($file) {
- if (w3_is_url($file)) {
- if (strstr($file, '?') === false) {
- $domain_url_regexp = '~' . w3_get_domain_url_regexp() . '~i';
- $file = preg_replace($domain_url_regexp, '', $file);
- }
- }
- if (!w3_is_url($file)) {
- $file = w3_path($file);
- $file = str_replace(w3_get_document_root(), '', $file);
- $file = ltrim($file, '/');
- }
- return $file;
- }
- /**
- * Normalizes file name for minify
- *
- * Relative to document root!
- *
- * @param string $file
- * @return string
- */
- function w3_normalize_file_minify2($file) {
- $file = w3_remove_query($file);
- $file = w3_normalize_file_minify($file);
- $file = w3_translate_file($file);
- return $file;
- }
- /**
- * Translates remote file to local file
- *
- * @param string $file
- * @return string
- */
- function w3_translate_file($file) {
- if (!w3_is_url($file)) {
- $file = '/' . ltrim($file, '/');
- $regexp = '~^' . w3_preg_quote(w3_get_site_path()) . '~';
- $file = preg_replace($regexp, w3_get_base_path(), $file);
- $file = ltrim($file, '/');
- }
- return $file;
- }
- /**
- * Remove WP query string from URL
- *
- * @param string $url
- * @return string
- */
- function w3_remove_query($url) {
- $url = preg_replace('~[&\?]+(ver=[a-z0-9-_\.]+|[0-9-]+)~i', '', $url);
- return $url;
- }
- /**
- * Converts win path to unix
- *
- * @param string $path
- * @return string
- */
- function w3_path($path) {
- $path = preg_replace('~[/\\\]+~', '/', $path);
- $path = rtrim($path, '/');
- return $path;
- }
- /**
- * Returns real path of given path
- *
- * @param string $path
- * @return string
- */
- function w3_realpath($path) {
- $path = w3_path($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 GMT date
- * @param integer $time
- * @return string
- */
- function w3_http_date($time) {
- return gmdate('D, d M Y H:i:s \G\M\T', $time);
- }
- /**
- * Redirects to URL
- *
- * @param string $url
- * @param array $params
- * @return string
- */
- function w3_redirect($url = '', $params = array()) {
- require_once W3TC_INC_DIR . '/functions/url.php';
- $url = w3_url_format($url, $params);
- @header('Location: ' . $url);
- exit();
- }
- /**
- * Returns caching engine name
- *
- * @param $engine
- * @return string
- */
- function w3_get_engine_name($engine) {
- switch ($engine) {
- case 'memcached':
- $engine_name = 'memcached';
- break;
- case 'apc':
- $engine_name = 'apc';
- break;
- case 'eaccelerator':
- $engine_name = 'eaccelerator';
- break;
- case 'xcache':
- $engine_name = 'xcache';
- break;
- case 'wincache':
- $engine_name = 'wincache';
- break;
- case 'file':
- $engine_name = 'disk: basic';
- break;
- case 'file_generic':
- $engine_name = 'disk: enhanced';
- break;
- case 'ftp':
- $engine_name = 'self-hosted / file transfer protocol upload';
- break;
- case 's3':
- $engine_name = 'amazon simple storage service (s3)';
- break;
- case 'cf':
- $engine_name = 'amazon cloudfront';
- break;
- case 'cf2':
- $engine_name = 'amazon cloudfront';
- break;
- case 'rscf':
- $engine_name = 'rackspace cloud files';
- break;
- case 'azure':
- $engine_name = 'microsoft azure storage';
- break;
- case 'mirror':
- $engine_name = 'mirror';
- break;
- case 'netdna':
- $engine_name = 'netdna / maxcdn';
- break;
- case 'cotendo':
- $engine_name = 'cotendo';
- break;
- case 'edgecast':
- $engine_name = 'media template procdn / edgecast';
- break;
- default:
- $engine_name = 'n/a';
- break;
- }
- return $engine_name;
- }
- /**
- * Converts value to boolean
- *
- * @param mixed $value
- * @return boolean
- */
- function w3_to_boolean($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;
- }
- /**
- * Quotes regular expression string
- *
- * @param string $string
- * @param string $delimiter
- * @return string
- */
- function w3_preg_quote($string, $delimiter = null) {
- $string = preg_quote($string, $delimiter);
- $string = strtr($string, array(
- ' ' => '\ '
- ));
- return $string;
- }
- /**
- * Returns true if zlib output compression is enabled otherwise false
- *
- * @return boolean
- */
- function w3_zlib_output_compression() {
- return w3_to_boolean(ini_get('zlib.output_compression'));
- }
- /**
- * Recursive strips slahes from the var
- *
- * @param mixed $var
- * @return mixed
- */
- function w3_stripslashes($var) {
- if (is_string($var)) {
- return stripslashes($var);
- } elseif (is_array($var)) {
- $var = array_map('w3_stripslashes', $var);
- }
- return $var;
- }
- /**
- * Escapes HTML comment
- *
- * @param string $comment
- * @return mixed
- */
- function w3_escape_comment($comment) {
- while (strstr($comment, '--') !== false) {
- $comment = str_replace('--', '- -', $comment);
- }
- return $comment;
- }
- /**
- * Returns instance of singleton class
- *
- * @param string $class
- * @return object
- */
- function &w3_instance($class) {
- static $instances = array();
- if (!isset($instances[$class])) {
- require_once W3TC_LIB_W3_DIR . '/' .
- str_replace('_', '/', substr($class, 3)) . '.php';
- @$instances[$class] = & new $class();
- }
- $v = $instances[$class]; // Don't return reference
- return $v;
- }
- /**
- * Loads plugins
- *
- * @return void
- */
- function w3_load_plugins() {
- $dir = @opendir(W3TC_PLUGINS_DIR);
- if ($dir) {
- while (($entry = @readdir($dir)) !== false) {
- if (strrchr($entry, '.') === '.php') {
- require_once W3TC_PLUGINS_DIR . '/' . $entry;
- }
- }
- @closedir($dir);
- }
- }