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<?php
if (!defined('ABSPATH')) {
die();
}
define('W3TC', true);
define('W3TC_VERSION', '0.9.4.1');
define('W3TC_POWERED_BY', 'W3 Total Cache/' . W3TC_VERSION);
define('W3TC_EMAIL', 'w3tc@w3-edge.com');
define('W3TC_TEXT_DOMAIN', 'w3-total-cache');
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', 'W3 EDGE, Optimization Products for WordPress');
define('W3TC_FEED_URL', 'http://feeds.feedburner.com/W3TOTALCACHE');
define('W3TC_NEWS_FEED_URL', 'http://feeds.feedburner.com/W3EDGE');
define('W3TC_README_URL', 'http://plugins.svn.wordpress.org/w3-total-cache/trunk/readme.txt');
define('W3TC_SUPPORT_US_TIMEOUT', 2592000);
define('W3TC_SUPPORT_REQUEST_URL', 'https://www.w3-edge.com/w3tc/support/');
define('W3TC_TRACK_URL', 'https://www.w3-edge.com/w3tc/track/');
define('W3TC_MAILLINGLIST_SIGNUP_URL', 'https://www.w3-edge.com/w3tc/emailsignup/');
define('NEWRELIC_SIGNUP_URL', 'http://bit.ly/w3tc-partner-newrelic-signup');
define('MAXCDN_SIGNUP_URL', 'http://bit.ly/w3tc-cdn-maxcdn-create-account');
define('MAXCDN_AUTHORIZE_URL', 'http://bit.ly/w3tc-cdn-maxcdn-authorize');
define('NETDNA_AUTHORIZE_URL', 'https://cp.netdna.com/i/w3tc');
// this is the URL our updater / license checker pings. This should be the URL of the site with EDD installed
if (!defined('EDD_W3EDGE_STORE_URL')) define('EDD_W3EDGE_STORE_URL', 'https://www.w3-edge.com/' );
if (!defined('EDD_W3EDGE_STORE_URL_PLUGIN')) define('EDD_W3EDGE_STORE_URL_PLUGIN', 'https://www.w3-edge.com/?w3tc_buy_pro_plugin' );
// the name of your product. This should match the download name in EDD exactly
define('EDD_W3EDGE_W3TC_NAME', 'W3 Total Cache Pro: Annual Subscription');
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_INC_WIDGET_DIR', W3TC_INC_DIR. '/widget');
define('W3TC_INC_FUNCTIONS_DIR', W3TC_INC_DIR . '/functions');
define('W3TC_INC_OPTIONS_DIR', W3TC_INC_DIR . '/options');
define('W3TC_INC_LIGHTBOX_DIR', W3TC_INC_DIR . '/lightbox');
define('W3TC_INC_POPUP_DIR', W3TC_INC_DIR . '/popup');
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_LIB_NETDNA_DIR', W3TC_LIB_DIR . '/NetDNA');
define('W3TC_LIB_OAUTH_DIR', W3TC_LIB_DIR . '/OAuth');
define('W3TC_LIB_NEWRELIC_DIR', W3TC_LIB_DIR . '/NewRelic');
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_LANGUAGES_DIR', W3TC_DIR . '/languages');
define('W3TC_CACHE_DIR', WP_CONTENT_DIR . '/cache');
define('W3TC_CONFIG_DIR', WP_CONTENT_DIR . '/w3tc-config');
define('W3TC_CACHE_CONFIG_DIR', W3TC_CACHE_DIR . '/config');
define('W3TC_CACHE_MINIFY_DIR', W3TC_CACHE_DIR . '/minify');
define('W3TC_CACHE_PAGE_ENHANCED_DIR', W3TC_CACHE_DIR . '/page_enhanced');
define('W3TC_CACHE_TMP_DIR', W3TC_CACHE_DIR . '/tmp');
define('W3TC_CACHE_BLOGMAP_FILENAME', W3TC_CACHE_DIR . '/blogs.php');
defined('WP_CONTENT_DIR') || define('WP_CONTENT_DIR', realpath(W3TC_DIR . '/../..'));
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_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_FILE_DB_CLUSTER_CONFIG', WP_CONTENT_DIR . '/db-cluster-config.php');
define('W3TC_ADDIN_FILE_OBJECT_CACHE', WP_CONTENT_DIR . '/object-cache.php');
define('W3TC_WP_LOADER', (defined('WP_PLUGIN_DIR') ? WP_PLUGIN_DIR : WP_CONTENT_DIR . '/plugins') . '/w3tc-wp-loader.php');
if (!defined('W3TC_EXTENSION_DIR'))
define('W3TC_EXTENSION_DIR', (defined('WP_PLUGIN_DIR') ? WP_PLUGIN_DIR : WP_CONTENT_DIR . '/plugins'));
define('W3TC_CORE_EXTENSION_DIR', W3TC_DIR . '/extensions');
w3_require_once(W3TC_INC_DIR . '/functions/compat.php');
w3_require_once(W3TC_INC_DIR . '/functions/plugin.php');
@ini_set('pcre.backtrack_limit', 4194304);
@ini_set('pcre.recursion_limit', 4194304);
global $w3_late_init;
$w3_late_init = false;
/**
* Returns current microtime
*
* @return double
*/
function w3_microtime() {
list ($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);
}
/**
* If content can handle HTML comments, can disable printout per request using filter 'w3tc_can_print_comment'
* @param $buffer
* @return bool
*/
function w3_can_print_comment(&$buffer) {
if (function_exists('apply_filters'))
return apply_filters('w3tc_can_print_comment', w3_is_xml($buffer) && !defined('DOING_AJAX'));
return w3_is_xml($buffer) && !defined('DOING_AJAX');
}
/*
* Returns URI from filename/dirname
*
* @return string
*/
function w3_filename_to_url($filename, $use_site_url = false) {
// using wp-content instead of document_root as known dir since dirbased
// multisite wp adds blogname to the path inside site_url
if (substr($filename, 0, strlen(WP_CONTENT_DIR)) != WP_CONTENT_DIR)
return '';
$uri_from_wp_content = substr($filename, strlen(WP_CONTENT_DIR));
if ($use_site_url)
$site_url_ssl = w3_get_url_ssl(w3_get_site_url());
else
$site_url_ssl = w3_get_url_ssl(w3_get_home_url());
$dir = '';
if (substr(trailingslashit(WP_CONTENT_DIR), 0, strlen(trailingslashit(w3_get_site_root()))) == trailingslashit(w3_get_site_root())) {
if ($use_site_url || w3_get_domain(w3_get_home_url()) == w3_get_domain(w3_get_site_url()))
$dir = str_replace($site_url_ssl, '', w3_get_url_ssl(w3_get_site_url()));
else
$dir = str_replace($site_url_ssl, '', w3_get_url_ssl(w3_get_home_url()));
$dir = trim($dir, '/\\');
if ($dir)
$dir = '/' . $dir;
$content_path = trim(substr(trailingslashit(WP_CONTENT_DIR), strlen(trailingslashit(w3_get_site_root()))), '/\\');
}
else
$content_path = trim(substr(trailingslashit(WP_CONTENT_DIR), strlen(trailingslashit(w3_get_document_root()))), '/\\');
$url = $site_url_ssl . $dir . '/' . $content_path . $uri_from_wp_content;
return $url;
}
/**
* Returns true if database cluster is used
*
* @return boolean
*/
function w3_is_dbcluster() {
return defined('W3TC_FILE_DB_CLUSTER_CONFIG') && @file_exists(W3TC_FILE_DB_CLUSTER_CONFIG)
&& defined('W3TC_ENTERPRISE') && W3TC_ENTERPRISE;
}
/**
* 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($content, '<title>Database Error</title>') !== false);
}
/**
* Retuns true if preview settings active
*
* @return boolean
*/
function w3_is_preview_mode() {
return (isset($_COOKIE['w3tc_preview']) && $_COOKIE['w3tc_preview'] == true) || (isset($_REQUEST['w3tc_preview']) ||
(isset($_SERVER['HTTP_REFERER']) &&
strstr($_SERVER['HTTP_REFERER'], 'w3tc_preview') !== false));
}
/**
* Returns a preview link with current state
* @return string
*/
function w3tc_get_preview_link() {
w3_require_once(W3TC_INC_FUNCTIONS_DIR . '/ui.php');
return w3_is_preview_mode() ? w3_button_link(__('Stop Previewing', 'w3-total-cache'), wp_nonce_url(w3_admin_url('admin.php?page=w3tc_dashboard&w3tc_default_stop_previewing'), 'w3tc'), false) : w3_button_link(__('Preview', 'w3-total-cache'), wp_nonce_url(w3_admin_url('admin.php?page=w3tc_dashboard&w3tc_default_previewing'), 'w3tc'), true);
}
/**
* 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', 'maxcdn',
'cotendo', 'akamai', 'edgecast', 'att'));
}
/**
* 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', 'maxcdn', 'cotendo', 'cf2', 'akamai', 'edgecast', 'att'));
}
/**
* Returns true if CDN has purge all support
* @param $engine
* @return bool
*/
function w3_cdn_can_purge_all($engine) {
return in_array($engine, array('cotendo', 'edgecast', 'att', 'netdna', 'maxcdn'));
}
/**
* Returns domain from host
*
* @param string $host
* @return string
*/
function w3_get_domain($host) {
$host = strtolower($host);
if (($pos = strpos($host, ':')) !== false) {
$host = substr($host, $pos+3);
}
if (($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;
}
/**
* Returns current blog ID
*
* @return integer
*/
function w3_get_blog_id() {
global $w3_current_blog_id;
if (!is_null($w3_current_blog_id))
return $w3_current_blog_id;
if (!w3_is_network() || is_network_admin()) {
$w3_current_blog_id = 0;
return $w3_current_blog_id;
}
$blog_data = w3_blogmap_get_blog_data();
if (!is_null($blog_data))
$w3_current_blog_id = substr($blog_data, 1);
else
$w3_current_blog_id = 0;
return $w3_current_blog_id;
}
/**
* Returns blogmap filename by home url
*
* @param string $blog_home_url
* @return string
*/
function w3_blogmap_filename($blog_home_url) {
if (!defined('W3TC_BLOG_LEVELS'))
return W3TC_CACHE_BLOGMAP_FILENAME;
else {
$filename = dirname(W3TC_CACHE_BLOGMAP_FILENAME) . '/' .
basename(W3TC_CACHE_BLOGMAP_FILENAME, '.php') . '/';
$s = md5($blog_home_url);
for ($n = 0; $n < W3TC_BLOG_LEVELS; $n++)
$filename .= substr($s, $n, 1) . '/';
return $filename . basename(W3TC_CACHE_BLOGMAP_FILENAME);
}
}
/**
* Returns blog_id by home url
* If database not initialized yet - returns 0
*
* @return integer
*/
function w3_blogmap_get_blog_data() {
$host = w3_get_host();
// subdomain
if (w3_is_subdomain_install()) {
$blog_data = w3_blogmap_try_get_blog_data($host);
if (is_null($blog_data))
$GLOBALS['w3tc_blogmap_register_new_item'] = $host;
return $blog_data;
} else {
// try subdir blog
$url = $host . $_SERVER['REQUEST_URI'];
$pos = strpos($url, '?');
if ($pos !== false)
$url = substr($url, 0, $pos);
$url = rtrim($url, '/');
$start_url = $url;
for (;;) {
$blog_data = w3_blogmap_try_get_blog_data($url);
if (!is_null($blog_data))
return $blog_data;
$pos = strrpos($url, '/');
if ($pos === false)
break;
$url = rtrim(substr($url, 0, $pos), '/');
}
$GLOBALS['w3tc_blogmap_register_new_item'] = $start_url;
return null;
}
}
function w3_blogmap_try_get_blog_data($url) {
$filename = w3_blogmap_filename($url);
if (file_exists($filename)) {
$data = file_get_contents($filename);
$blog_data = @eval($data);
if (is_array($blog_data) && isset($blog_data[$url]))
return $blog_data[$url];
}
return null;
}
/**
* @return bool
*/
function w3_force_master() {
global $w3_force_master;
if (!is_null($w3_force_master))
return $w3_force_master;
if (!w3_is_multisite())
$w3_force_master = false;
else {
$blog_data = w3_blogmap_get_blog_data();
if (is_null($blog_data) ||
($blog_data[0] != 'm' && $blog_data[0] != 'c'))
$w3_force_master = true;
else
$w3_force_master = ($blog_data[0] == 'm');
}
return $w3_force_master;
}
/**
* Returns path to section's cache dir
*
* @param string $section
* @return string
*/
function w3_cache_dir($section) {
return W3TC_CACHE_DIR . '/' . $section;
}
/**
* Returns path to blog's cache dir
*
* @param string $section
* @param null|int $blog_id
* @return string
*/
function w3_cache_blog_dir($section, $blog_id = null) {
if (is_null($blog_id))
$blog_id = w3_get_blog_id();
$postfix = sprintf('%06d', $blog_id);
if (defined('W3TC_BLOG_LEVELS')) {
for ($n = 0; $n < W3TC_BLOG_LEVELS; $n++)
$postfix = substr($postfix, strlen($postfix) - 1 - $n, 1) . '/' .
$postfix;
}
return w3_cache_dir($section) . '/' . $postfix;
}
/**
* Return full path to log file for module
* Path used in priority
* 1) W3TC_DEBUG_DIR
* 2) WP_DEBUG_LOG
* 3) W3TC_CACHE_DIR
*
* @param $module
* @param null $blog_id
* @return string
*/
function w3_debug_log($module, $blog_id = null) {
if (is_null($blog_id))
$blog_id = w3_get_blog_id();
$postfix = sprintf('%06d', $blog_id);
if (defined('W3TC_BLOG_LEVELS')) {
for ($n = 0; $n < W3TC_BLOG_LEVELS; $n++)
$postfix = substr($postfix, strlen($postfix) - 1 - $n, 1) . '/' .
$postfix;
}
$from_dir = W3TC_CACHE_DIR;
if (defined('W3TC_DEBUG_DIR') && W3TC_DEBUG_DIR) {
$dir_path = W3TC_DEBUG_DIR;
if (!is_dir(W3TC_DEBUG_DIR))
$from_dir = dirname(W3TC_DEBUG_DIR);
} else
$dir_path = w3_cache_dir('log');
$filename = $dir_path . '/' . $postfix . '/' . $module . '.log';
if (!is_dir(dirname($filename))) {
w3_require_once( W3TC_INC_DIR . '/functions/file.php');
w3_mkdir_from(dirname($filename), $from_dir);
}
return $filename;
}
/**
* 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) {
$config = w3_instance('W3_Config');
if (w3_is_multisite() && $config->get_boolean('common.force_master')) {
$home_url = get_home_url();
} else {
// get_option is unusable here, it can cause problem when objCache isn't yet initialized
// Which is why we save the 'home' option in our ConfigCache
// We don't just use $config->get_string, because we want the cache to rebuild
// when 'wordpress.home' is not (yet) present
$home_url = $config->get_cache_option('wordpress.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;
}
/**
* Network installs returns wrong wp site path
* @return string
*/
function w3_get_wp_sitepath() {
if (w3_is_network()) {
global $current_site;
return $current_site->path;
} else {
return w3_get_site_path();
}
}
/**
* 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']) && $_SERVER['SCRIPT_FILENAME'] == $_SERVER['PHP_SELF']) {
$document_root = w3_get_site_root();
} elseif (!empty($_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) {
if (!empty($_SERVER['HTTP_X_FORWARDED_HOST'])) {
$host = $_SERVER['HTTP_X_FORWARDED_HOST'];
} elseif (!empty($_SERVER['HTTP_HOST'])) {
// HTTP_HOST sometimes is not set causing warning
$host = $_SERVER['HTTP_HOST'];
} else {
$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', 'maxcdn', 'cotendo',
'edgecast', 'akamai', 'att'));
}
/**
* Returns true if CDN supports realtime purge. That is purging on post changes, comments etc.
* @param $engine
* @return bool
*/
function w3tc_cdn_supports_realtime_purge($engine) {
return !in_array($engine, array('cf2'));
}
/**
* Parses path
*
* @param string $path
* @return mixed
*/
function w3_parse_path($path) {
$path = str_replace(array(
'%BLOG_ID%',
'%POST_ID%',
'%BLOG_ID%',
'%HOST%',
'%DOMAIN%',
'%BASE_PATH%'
), array(
(isset($GLOBALS['blog_id']) ? (int) $GLOBALS['blog_id'] : 0),
(isset($GLOBALS['post_id']) ? (int) $GLOBALS['post_id'] : 0),
w3_get_blog_id(),
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()) {
w3_require_once(W3TC_INC_DIR . '/functions/url.php');
$url = w3_url_format($url, $params);
if (function_exists('do_action'))
do_action('w3_redirect');
@header('Location: ' . $url);
exit();
}
/**
* Redirects to URL
*
* @param string $url
* @param array $params
*
* @return string
*/
function w3_redirect_temp( $url = '', $params = array() ) {
w3_require_once( W3TC_INC_DIR . '/functions/url.php' );
$url = w3_url_format( $url, $params );
if (function_exists('do_action'))
do_action( 'w3_redirect' );
$status_code = 301;
$protocol = $_SERVER["SERVER_PROTOCOL"];
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 );
}
@header( 'Location: ' . $url, true, $status_code );
exit();
}
/**
* Returns caching engine name
*
* @param $engine
* @param $module
*
* @return string
*/
function w3_get_engine_name($engine, $module = '') {
switch ($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':
$engine_name = 'wincache';
break;
case 'file':
if ($module == 'pgcache')
$engine_name = 'disk: basic';
else
$engine_name = 'disk';
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';
break;
case 'maxcdn':
$engine_name = 'maxcdn';
break;
case 'cotendo':
$engine_name = 'cotendo';
break;
case 'akamai':
$engine_name = 'akamai';
break;
case 'edgecast':
$engine_name = 'media template procdn / edgecast';
break;
case 'att':
$engine_name = 'at&t';
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[$class])) {
w3_require_once( W3TC_LIB_W3_DIR . '/' .
str_replace('_', '/', substr($class, 3)) . '.php');
$instances[$class] = new $class();
}
$v = $instances[$class]; // Don't return reference
return $v;
}
/**
* Requires and keeps track of which files has already been loaded.
*
* @param string $path Absolute path to the file
*/
function w3_require_once($path) {
static $files = array();
if (!isset($files[$path])) {
$files[$path] = 1;
require_once $path;
}
}
/**
* Detects post ID
*
* @return integer
*/
function w3_detect_post_id() {
global $posts, $comment_post_ID, $post_ID;
if ($post_ID) {
return $post_ID;
} elseif ($comment_post_ID) {
return $comment_post_ID;
} elseif (is_single() || is_page() && count($posts)) {
return $posts[0]->ID;
} elseif (isset($_REQUEST['p'])) {
return (integer) $_REQUEST['p'];
}
return 0;
}
function w3_get_instance_id() {
static $instance_id;
if(!isset($instance_id)) {
$config = w3_instance('W3_Config');
$instance_id = $config->get_integer('common.instance_id', 0);
}
return $instance_id;
}
/**
* Checks if post should be flushed or not. Returns true if it should not be flushed
* @param $post
* @param string $module which cache module to check against (pgcache, varnish, cdncache, dbcache or objectcache)
* @param W3_Config $config
* @return bool
*/
function w3_is_flushable_post($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 'cdncache':
if (!$config->get_boolean('pgcache.reject.logged'))
$post_status[] = 'private';
break;
case 'dbcache':
if (!$config->get_boolean('dbcache.reject.logged'))
$post_status[] = 'private';
break;
}
$flushable = !in_array($post->post_type, $post_type) && in_array($post->post_status, $post_status);
return apply_filters('w3tc_flushable_post', $flushable, $post, $module);
}
/**
* Takes seconds and converts to array('Nh ','Nm ', 'Ns ', 'Nms ') or "Nh Nm Ns Nms"
* @param $input
* @param bool $string
* @return array|string
*/
function w3_convert_secs_to_time($input, $string = true) {
$input = (double)$input;
$time = array();
$msecs = floor($input*1000 % 1000);
$seconds = $input % 60;
$input = floor($input / 60);
$minutes = $input % 60;
$input = floor($input / 60);
$hours = $input % 60;
if ($hours)
$time[] = sprintf(__('%dh', 'w3-total-cache'), $hours);
if ($minutes)
$time[] = sprintf(__('%dm', 'w3-total-cache'), $minutes);
if ($seconds)
$time[] = sprintf(__('%ds', 'w3-total-cache'), $seconds);
if ($msecs)
$time[] = sprintf(__('%dms', 'w3-total-cache'), $msecs);
if(empty($time))
$time[] = sprintf(__('%dms', 'w3-total-cache'), 0);
if ($string)
return implode(' ', $time);
return $time;
}
/**
* @var W3_Config $config
* @return string
*/
function w3_w3tc_release_version($config = null) {
if (w3_is_enterprise($config))
return 'enterprise';
if (w3_is_pro($config) && w3tc_is_pro_dev_mode())
return 'pro development';
if (w3_is_pro($config))
return 'pro';
return 'community';
}
/**
* @param W3_Config $config
* @return bool
*/
function w3_is_pro($config = null) {
$result = false;
if ($config)
$result = $config->get_string('plugin.type') == 'pro' ||
($config->get_string('plugin.type') == 'pro_dev' );
return $result || (defined('W3TC_PRO') && W3TC_PRO);
}
/**
* Enable Pro Dev mode support
* @return bool
*/
function w3tc_is_pro_dev_mode() {
return defined('W3TC_PRO_DEV_MODE') && W3TC_PRO_DEV_MODE;
}
/**
* @param W3_Config $config
* @return bool
*/
function w3_is_enterprise($config = null) {
$result = false;
if ($config)
$result = $config->get_string('plugin.type') == 'enterprise';
return $result || (defined('W3TC_ENTERPRISE') && W3TC_ENTERPRISE);
}
/**
* Checks if site is using edge mode.
* @return bool
*/
function w3tc_edge_mode() {
return defined('W3TC_EDGE_MODE') && W3TC_EDGE_MODE;
}
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