function get($key)
{
$value = parent::get($key);
if (!is_null($value)) {
return $value;
}
$raw_cache_value = output_cache_get($this->_realKey($key), $this->timeout);
$cache_value = is_string($raw_cache_value) ? unserialize($raw_cache_value) : $raw_cache_value;
return $this->_processGet($key, $cache_value);
}
function cache_get_data($key, $ttl = 120)
{
global $boardurl, $sourcedir, $modSettings, $memcached;
global $cache_hits, $cache_count, $db_show_debug;
if (empty($modSettings['cache_enable']) && !empty($modSettings)) {
return;
}
$cache_count = isset($cache_count) ? $cache_count + 1 : 1;
if (isset($db_show_debug) && $db_show_debug === true) {
$cache_hits[$cache_count] = array('k' => $key, 'd' => 'get');
$st = microtime();
}
$key = md5($boardurl . filemtime($sourcedir . '/Load.php')) . '-SMF-' . $key;
// Okay, let's go for it memcached!
if (function_exists('memcache_get') && isset($modSettings['cache_memcached']) && trim($modSettings['cache_memcached']) != '') {
// Not connected yet?
if (empty($memcached)) {
get_memcached_server();
}
if (!$memcached) {
return;
}
$value = memcache_get($memcached, $key);
} elseif (function_exists('eaccelerator_get')) {
$value = eaccelerator_get($key);
} elseif (function_exists('mmcache_get')) {
$value = mmcache_get($key);
} elseif (function_exists('apc_fetch')) {
$value = apc_fetch($key . 'smf');
} elseif (function_exists('output_cache_get')) {
$value = output_cache_get($key, $ttl);
}
if (isset($db_show_debug) && $db_show_debug === true) {
$cache_hits[$cache_count]['t'] = array_sum(explode(' ', microtime())) - array_sum(explode(' ', $st));
$cache_hits[$cache_count]['s'] = isset($value) ? strlen($value) : 0;
}
if (empty($value)) {
return null;
} else {
return @unserialize($value);
}
}
/**
* Clean some cache records
*
* Available modes are :
* Zend_Cache::CLEANING_MODE_ALL (default) => remove all cache entries ($tags is not used)
* Zend_Cache::CLEANING_MODE_OLD => remove too old cache entries ($tags is not used)
* This mode is not supported in this backend
* Zend_Cache::CLEANING_MODE_MATCHING_TAG => remove cache entries matching all given tags
* ($tags can be an array of strings or a single string)
* This mode is not supported in this backend
* Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG => remove cache entries not matching one of the given tags
* ($tags can be an array of strings or a single string)
* This mode is not supported in this backend
*
* @param string $mode clean mode
* @param tags array $tags array of tags
* @return boolean true if no problem
*/
public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = array())
{
if ($mode == Zend_Cache::CLEANING_MODE_MATCHING_TAG) {
$idlist = null;
foreach ($tags as $tag) {
$next_idlist = output_cache_get(self::TAGS_PREFIX . $tag, $this->_directives['lifetime']);
if ($idlist) {
$idlist = array_intersect_assoc($idlist, $next_idlist);
} else {
$idlist = $next_idlist;
}
if (count($idlist) == 0) {
// if ID list is already empty - we may skip checking other IDs
$idlist = null;
break;
}
}
if ($idlist) {
foreach ($idlist as $id) {
output_cache_remove_key($id);
}
}
return true;
}
if ($mode == Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG) {
$this->_log("Zend_Cache_Backend_ZendPlatform::clean() : CLEANING_MODE_NOT_MATCHING_TAG is not supported by the Zend Platform backend");
}
$cache_dir = ini_get('zend_accelerator.output_cache_dir');
if (!$cache_dir) {
return false;
}
$cache_dir .= '/.php_cache_api/';
return $this->_clean($cache_dir, $mode);
}
/**
* Get data from the cache
*
* Get data from the cache that matches this key, if it exists
*
* @param string $key the cache data identifier
* @param int $ttl how long will the data be considered fresh (in seconds)
* @return mixed $value the cache data or null
* @since 0.1.0
*/
function smfapi_cacheGetData($key, $ttl = 120)
{
global $boardurl, $sourcedir, $modSettings, $memcached;
global $cache_hits, $cache_count, $db_show_debug, $cachedir;
if (empty($modSettings['cache_enable']) && !empty($modSettings)) {
return;
}
$cache_count = isset($cache_count) ? $cache_count + 1 : 1;
if (isset($db_show_debug) && $db_show_debug === true) {
$cache_hits[$cache_count] = array('k' => $key, 'd' => 'get');
$st = microtime();
}
$key = md5($boardurl . filemtime($sourcedir . '/Load.php')) . '-SMF-' . strtr($key, ':', '-');
// again, eAccelerator.
if (function_exists('eaccelerator_get')) {
$value = eaccelerator_get($key);
} elseif (function_exists('mmcache_get')) {
$value = mmcache_get($key);
} elseif (function_exists('apc_fetch')) {
$value = apc_fetch($key . 'smf');
} elseif (function_exists('output_cache_get')) {
$value = output_cache_get($key, $ttl);
} elseif (function_exists('xcache_get') && ini_get('xcache.var_size') > 0) {
$value = xcache_get($key);
} elseif (file_exists($cachedir . '/data_' . $key . '.php') && filesize($cachedir . '/data_' . $key . '.php') > 10) {
require $cachedir . '/data_' . $key . '.php';
if (!empty($expired) && isset($value)) {
@unlink($cachedir . '/data_' . $key . '.php');
unset($value);
}
}
if (isset($db_show_debug) && $db_show_debug === true) {
$cache_hits[$cache_count]['t'] = array_sum(explode(' ', microtime())) - array_sum(explode(' ', $st));
$cache_hits[$cache_count]['s'] = isset($value) ? strlen($value) : 0;
}
if (empty($value)) {
return null;
} else {
return @unserialize($value);
}
}
/**
* Get a cached value.
*
* @param string $key
* @param int $ttl = 120
*/
public static function getCache($key, $ttl = 120)
{
if (-1 == self::$API) {
return null;
}
self::$cache_count++;
if (self::$want_debug) {
self::$cache_hits[self::$cache_count] = array('k' => $key, 'd' => 'get');
$st = microtime();
}
$key = self::$basekey . strtr($key, ':', '-');
switch (self::$API) {
case 5:
$key = str_replace(' ', '_', $key);
$instance = self::getMemcachedServer();
$value = $instance->get($key);
break;
case 4:
if (empty(self::$memcached)) {
self::getMemcacheServer();
}
if (!self::$memcached) {
return;
}
$value = memcache_get(self::$memcached, $key);
break;
case 1:
$value = apc_fetch($key . 'smf');
break;
case 3:
$value = output_cache_get($key, $ttl);
break;
case 2:
$value = xcache_get($key);
break;
case 0:
if (file_exists(self::$cachedir . '/data_' . $key . '.php') && filesize(self::$cachedir . '/data_' . $key . '.php') > 10) {
require self::$cachedir . '/data_' . $key . '.php';
if (!empty($expired) && isset($value)) {
@unlink(self::$cachedir . '/data_' . $key . '.php');
unset($value);
}
}
break;
}
if (isset($db_show_debug) && $db_show_debug === true) {
self::$cache_hits[self::$cache_count]['t'] = array_sum(explode(' ', microtime())) - array_sum(explode(' ', $st));
self::$cache_hits[self::$cache_count]['s'] = isset($value) ? strlen($value) : 0;
}
if (empty($value)) {
return null;
} else {
return @unserialize($value);
}
}
/**
* Load a cache file.
*
* @return mixed
*/
public function load()
{
$this->clean();
$content = output_cache_get($this->getIdMd5(), $this->_parameters->getParameter('lifetime'));
if (isset($return[0])) {
return $return[0];
}
return false;
}
/**
* Gets the value from the cache specified by key, so long as it is not older than ttl seconds.
* - It may often "miss", so shouldn't be depended on.
* - It supports the same as cache_put_data().
*
* @param string $key
* @param int $ttl = 120
*/
function cache_get_data($key, $ttl = 120)
{
global $cache_memcached, $memcached, $cache_hits, $cache_count, $db_show_debug;
global $cache_accelerator, $cache_enable, $expired;
if (empty($cache_enable)) {
return;
}
$cache_count = isset($cache_count) ? $cache_count + 1 : 1;
if (isset($db_show_debug) && $db_show_debug === true) {
$cache_hits[$cache_count] = array('k' => $key, 'd' => 'get');
$st = microtime(true);
}
$key = cache_get_key($key);
switch ($cache_accelerator) {
case 'memcached':
// Okay, let's go for it memcached!
if ((function_exists('memcache_get') || function_exists('memcached_get')) && !empty($cache_memcached)) {
// Not connected yet?
if (empty($memcached)) {
get_memcached_server();
}
if (!$memcached) {
return null;
}
$value = function_exists('memcache_get') ? memcache_get($memcached, $key) : memcached_get($memcached, $key);
}
break;
case 'eaccelerator':
// Again, eAccelerator.
if (function_exists('eaccelerator_get')) {
$value = eaccelerator_get($key);
}
break;
case 'mmcache':
// The older, but ever-stable, Turck MMCache...
if (function_exists('mmcache_get')) {
$value = mmcache_get($key);
}
break;
case 'apc':
case 'apcu':
// This is the free APC or APCu from PECL.
if (function_exists('apc_fetch')) {
$value = apc_fetch($key . 'elkarte');
}
break;
case 'zend':
// Zend's pricey stuff.
if (function_exists('zend_shm_cache_fetch')) {
$value = zend_shm_cache_fetch('ELK::' . $key);
} elseif (function_exists('output_cache_get')) {
$value = output_cache_get($key, $ttl);
}
break;
case 'xcache':
if (function_exists('xcache_get') && ini_get('xcache.var_size') > 0) {
$value = xcache_get($key);
}
break;
default:
// Otherwise it's ElkArte data!
if (file_exists(CACHEDIR . '/data_' . $key . '.php') && filesize(CACHEDIR . '/data_' . $key . '.php') > 10) {
// php will cache file_exists et all, we can't 100% depend on its results so proceed with caution
@(include CACHEDIR . '/data_' . $key . '.php');
if (!empty($expired) && isset($value)) {
@unlink(CACHEDIR . '/data_' . $key . '.php');
unset($value);
}
}
break;
}
if (isset($db_show_debug) && $db_show_debug === true) {
$cache_hits[$cache_count]['t'] = microtime(true) - $st;
$cache_hits[$cache_count]['s'] = isset($value) ? strlen($value) : 0;
}
if (function_exists('call_integration_hook') && isset($value)) {
call_integration_hook('cache_get_data', array($key, $ttl, $value));
}
return empty($value) ? null : @unserialize($value);
}
/**
* Fetch data and timestamp from ZendPlatform, store in instance
*
* @param string $id
*
* @return bool success
*/
private function _fetch($id)
{
if ($this->_id === $id) {
return true;
}
$ret = output_cache_get($id, $this->_exp);
if (false === $ret) {
$this->_id = null;
return false;
}
list($this->_lm, $this->_data) = explode('|', $ret, 2);
$this->_id = $id;
return true;
}
/**
* Clean some cache records
*
* Available modes are :
* IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_ALL (default) => remove all cache entries ($tags is not used)
* IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_OLD => remove too old cache entries ($tags is not used)
* This mode is not supported in this backend
* IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_MATCHING_TAG => remove cache entries matching all given tags
* ($tags can be an array of strings or a single string)
* IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG => unsupported
* IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_MATCHING_ANY_TAG => remove cache entries matching any given tags
* ($tags can be an array of strings or a single string)
*
* @param string $mode Clean mode
* @param array $tags Array of tags
* @throws IfwPsn_Vendor_Zend_Cache_Exception
* @return boolean True if no problem
*/
public function clean($mode = IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_ALL, $tags = array())
{
switch ($mode) {
case IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_ALL:
case IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_OLD:
$cache_dir = ini_get('zend_accelerator.output_cache_dir');
if (!$cache_dir) {
return false;
}
$cache_dir .= '/.php_cache_api/';
return $this->_clean($cache_dir, $mode);
break;
case IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_MATCHING_TAG:
$idlist = null;
foreach ($tags as $tag) {
$next_idlist = output_cache_get(self::TAGS_PREFIX . $tag, $this->_directives['lifetime']);
if ($idlist) {
$idlist = array_intersect_assoc($idlist, $next_idlist);
} else {
$idlist = $next_idlist;
}
if (count($idlist) == 0) {
// if ID list is already empty - we may skip checking other IDs
$idlist = null;
break;
}
}
if ($idlist) {
foreach ($idlist as $id) {
output_cache_remove_key($id);
}
}
return true;
break;
case IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG:
$this->_log("IfwPsn_Vendor_Zend_Cache_Backend_ZendPlatform::clean() : CLEANING_MODE_NOT_MATCHING_TAG is not supported by the Zend Platform backend");
return false;
break;
case IfwPsn_Vendor_Zend_Cache::CLEANING_MODE_MATCHING_ANY_TAG:
$idlist = null;
foreach ($tags as $tag) {
$next_idlist = output_cache_get(self::TAGS_PREFIX . $tag, $this->_directives['lifetime']);
if ($idlist) {
$idlist = array_merge_recursive($idlist, $next_idlist);
} else {
$idlist = $next_idlist;
}
if (count($idlist) == 0) {
// if ID list is already empty - we may skip checking other IDs
$idlist = null;
break;
}
}
if ($idlist) {
foreach ($idlist as $id) {
output_cache_remove_key($id);
}
}
return true;
break;
default:
IfwPsn_Vendor_Zend_Cache::throwException('Invalid mode for clean() method');
break;
}
}
function pmxCacheGet($key, $useMember = false, $null_array = false)
{
global $PortaMx_cache, $user_info;
$st = microtime(true);
$key = $PortaMx_cache['key'] . ($useMember ? '-' . implode('_', $user_info['groups']) : '') . '-' . $key;
if (function_exists('zend_shm_cache_fetch')) {
$value = zend_shm_cache_fetch('PMX::' . $key);
} elseif (function_exists('output_cache_get')) {
$value = output_cache_get($key, $ttl);
}
if (!empty($value)) {
$PortaMx_cache['vals']['loaded'] += strlen($value);
$PortaMx_cache['vals']['time'] += microtime(true) - $st;
return unserialize($value);
}
$PortaMx_cache['vals']['time'] += microtime(true) - $st;
return empty($null_array) ? null : array();
}
/**
* Gets the value from the cache specified by key, so long as it is not older than ttl seconds.
* - It may often "miss", so shouldn't be depended on.
* - It supports the same as cache_put_data().
*
* @param string $key
* @param int $ttl = 120
* @return string
*/
function cache_get_data($key, $ttl = 120)
{
global $boardurl, $sourcedir, $modSettings, $memcached;
global $cache_hits, $cache_count, $db_show_debug, $cachedir;
global $cache_accelerator, $cache_enable;
if (empty($cache_enable)) {
return;
}
$cache_count = isset($cache_count) ? $cache_count + 1 : 1;
if (isset($db_show_debug) && $db_show_debug === true) {
$cache_hits[$cache_count] = array('k' => $key, 'd' => 'get');
$st = microtime();
}
$key = md5($boardurl . filemtime($sourcedir . '/Load.php')) . '-SMF-' . strtr($key, ':/', '-_');
switch ($cache_accelerator) {
case 'memcache':
// Okay, let's go for it memcached!
if ((function_exists('memcache_get') || function_exists('memcached_get')) && isset($modSettings['cache_memcached']) && trim($modSettings['cache_memcached']) != '') {
// Not connected yet?
if (empty($memcached)) {
get_memcached_server();
}
if (!$memcached) {
return null;
}
$value = function_exists('memcache_get') ? memcache_get($cache['connection'], $key) : memcached_get($cache['connection'], $key);
}
break;
case 'eaccelerator':
// Again, eAccelerator.
if (function_exists('eaccelerator_get')) {
$value = eaccelerator_get($key);
}
break;
case 'mmcache':
// The older, but ever-stable, Turck MMCache...
if (function_exists('mmcache_get')) {
$value = mmcache_get($key);
}
break;
case 'apc':
// This is the free APC from PECL.
if (function_exists('apc_fetch')) {
$value = apc_fetch($key . 'smf');
}
break;
case 'zend':
// Zend's pricey stuff.
if (function_exists('zend_shm_cache_fetch')) {
$value = zend_shm_cache_fetch('SMF::' . $key, $ttl);
} elseif (function_exists('output_cache_get')) {
$value = output_cache_get($key, $ttl);
}
break;
case 'xcache':
if (function_exists('xcache_get') && ini_get('xcache.var_size') > 0) {
$value = xcache_get($key);
}
break;
default:
// Otherwise it's SMF data!
if (file_exists($cachedir . '/data_' . $key . '.php') && filesize($cachedir . '/data_' . $key . '.php') > 10) {
// php will cache file_exists et all, we can't 100% depend on its results so proceed with caution
@(include $cachedir . '/data_' . $key . '.php');
if (!empty($expired) && isset($value)) {
@unlink($cachedir . '/data_' . $key . '.php');
unset($value);
}
}
break;
}
if (isset($db_show_debug) && $db_show_debug === true) {
$cache_hits[$cache_count]['t'] = array_sum(explode(' ', microtime())) - array_sum(explode(' ', $st));
$cache_hits[$cache_count]['s'] = isset($value) ? strlen($value) : 0;
}
if (function_exists('call_integration_hook')) {
call_integration_hook('cache_get_data', array(&$key, &$ttl, &$value));
}
return empty($value) ? null : @unserialize($value);
}
/**
* Clean some cache records
*
* Available modes are :
* Zend_Cache::CLEANING_MODE_ALL (default) => remove all cache entries ($tags is not used)
* Zend_Cache::CLEANING_MODE_OLD => remove too old cache entries ($tags is not used)
* This mode is not supported in this backend
* Zend_Cache::CLEANING_MODE_MATCHING_TAG => remove cache entries matching all given tags
* ($tags can be an array of strings or a single string)
* This mode is not supported in this backend
* Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG => remove cache entries not matching one of the given tags
* ($tags can be an array of strings or a single string)
* This mode is not supported in this backend
*
* @param string $mode clean mode
* @param tags array $tags array of tags
* @return boolean true if no problem
*/
public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = array())
{
if ($mode == Zend_Cache::CLEANING_MODE_MATCHING_TAG) {
foreach ($tags as $tag) {
$idlist = output_cache_get(self::TAGS_PREFIX . $tag);
if ($idlist) {
foreach ($idlist as $id) {
output_cache_remove_key($id);
}
}
}
return true;
}
if ($mode == Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG) {
if ($this->_directives['logging']) {
Zend_Log::log("Zend_Cache_Backend_ZendPlatform::clean() : CLEANING_MODE_NOT_MATCHING_TAG is not supported by the Zend Platform backend", Zend_Log::LEVEL_WARNING);
}
}
$cacheDir = ini_get('zend_accelerator.output_cache_dir');
if (!$cacheDir) {
return false;
}
$cacheDir .= '/.php_cache_api/';
return $this->_clean($cacheDir, $mode);
}
/**
* Internal -- This function actually retrieves information from the caches.
* It is a helper function that provides that actual cache API abstraction.
*
* @param unknown_type $key
* @return unknown
*/
function external_cache_retrieve_helper($key)
{
$GLOBALS['external_cache_request_external_total']++;
$value = null;
if ($GLOBALS['external_cache_type'] == 'zend') {
$value = output_cache_get($key, EXTERNAL_CACHE_INTERVAL_SECONDS);
} elseif ($GLOBALS['external_cache_type'] == 'apc') {
$value = apc_fetch($key);
if (EXTERNAL_CACHE_DEBUG) {
echo "<HR>retrieving key from cache ({$key}) value: ({$value})<HR>";
}
}
return $value;
}