/**
* Returns cache key
*
* @param string $sql
* @return string
*/
function _get_cache_key($sql)
{
$key = sprintf('w3tc_%s_sql_%s', w3_get_host_id(), md5($sql));
/**
* Allow to modify cache key by W3TC plugins
*/
$key = w3tc_do_action('w3tc_dbcache_cache_key', $key);
return $key;
}
/**
* Returns custom files key
*
* @param string $hash
* @param string $type
* @return string
*/
function get_custom_data_key($hash, $type)
{
if ($this->_config->get_string('minify.engine') == 'file') {
$key = sprintf('%s.%s.customdata', $hash, $type);
} else {
$key = sprintf('w3tc_%s_minify_customdata_%s', w3_get_host_id(), md5($hash . $type));
}
return $key;
}
/**
* Returns page key
*
* @param string $request_uri
* @param string $mobile_group
* @param string $referrer_group
* @param string $encryption
* @param string $compression
* @return string
*/
function _get_page_key($request_uri, $mobile_group = '', $referrer_group = '', $encryption = false, $compression = false)
{
// replace fragment
$key = preg_replace('~#.*$~', '', $request_uri);
if ($this->_enhanced_mode) {
// URL decode
$key = urldecode($key);
// replace double slashes
$key = preg_replace('~[/\\\\]+~', '/', $key);
// replace query string
$key = preg_replace('~\\?.*$~', '', $key);
// replace index.php
$key = str_replace('/index.php', '/', $key);
// trim slash
$key = ltrim($key, '/');
if ($key && substr($key, -1) != '/') {
$key .= '/';
}
$key .= '_index';
} else {
$key = sprintf('w3tc_%s_page_%s', w3_get_host_id(), md5($key));
}
/**
* Append mobile group
*/
if ($mobile_group) {
$key .= '_' . $mobile_group;
}
/**
* Append referrer group
*/
if ($referrer_group) {
$key .= '_' . $referrer_group;
}
/**
* Append encryption
*/
if ($encryption) {
$key .= '_' . $encryption;
}
if ($this->_enhanced_mode) {
/**
* Append HTML extension
*/
$key .= '.html';
/**
* Append compression extension
*/
if ($compression) {
$key .= '.' . $compression;
}
} else {
/**
* Append compression
*/
if ($compression) {
$key .= '_' . $compression;
}
}
/**
* Allow to modify page key by W3TC plugins
*/
$key = w3tc_do_action('w3tc_pgcache_cache_key', $key);
return $key;
}
