102 lines
2.5 KiB
PHP
102 lines
2.5 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Memcache CacheResource
|
||
|
|
* CacheResource Implementation based on the KeyValueStore API to use
|
||
|
|
* memcache as the storage resource for Smarty's output caching.
|
||
|
|
* Note that memcache has a limitation of 256 characters per cache-key.
|
||
|
|
* To avoid complications all cache-keys are translated to a sha1 hash.
|
||
|
|
*
|
||
|
|
* @package CacheResource-examples
|
||
|
|
* @author Rodney Rehm
|
||
|
|
*/
|
||
|
|
class Smarty_CacheResource_Memcache extends Smarty_CacheResource_KeyValueStore
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* memcache instance
|
||
|
|
*
|
||
|
|
* @var Memcache
|
||
|
|
*/
|
||
|
|
protected $memcache = null;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Smarty_CacheResource_Memcache constructor.
|
||
|
|
*/
|
||
|
|
public function __construct()
|
||
|
|
{
|
||
|
|
if (class_exists('Memcached')) {
|
||
|
|
$this->memcache = new Memcached();
|
||
|
|
} else {
|
||
|
|
$this->memcache = new Memcache();
|
||
|
|
}
|
||
|
|
$this->memcache->addServer('127.0.0.1', 11211);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read values for a set of keys from cache
|
||
|
|
*
|
||
|
|
* @param array $keys list of keys to fetch
|
||
|
|
*
|
||
|
|
* @return array list of values with the given keys used as indexes
|
||
|
|
* @return boolean true on success, false on failure
|
||
|
|
*/
|
||
|
|
protected function read(array $keys)
|
||
|
|
{
|
||
|
|
$_keys = $lookup = array();
|
||
|
|
foreach ($keys as $k) {
|
||
|
|
$_k = sha1($k);
|
||
|
|
$_keys[] = $_k;
|
||
|
|
$lookup[ $_k ] = $k;
|
||
|
|
}
|
||
|
|
$_res = array();
|
||
|
|
$res = $this->memcache->get($_keys);
|
||
|
|
foreach ($res as $k => $v) {
|
||
|
|
$_res[ $lookup[ $k ] ] = $v;
|
||
|
|
}
|
||
|
|
return $_res;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Save values for a set of keys to cache
|
||
|
|
*
|
||
|
|
* @param array $keys list of values to save
|
||
|
|
* @param int $expire expiration time
|
||
|
|
*
|
||
|
|
* @return boolean true on success, false on failure
|
||
|
|
*/
|
||
|
|
protected function write(array $keys, $expire = null)
|
||
|
|
{
|
||
|
|
foreach ($keys as $k => $v) {
|
||
|
|
$k = sha1($k);
|
||
|
|
$this->memcache->set($k, $v, 0, $expire);
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Remove values from cache
|
||
|
|
*
|
||
|
|
* @param array $keys list of keys to delete
|
||
|
|
*
|
||
|
|
* @return boolean true on success, false on failure
|
||
|
|
*/
|
||
|
|
protected function delete(array $keys)
|
||
|
|
{
|
||
|
|
foreach ($keys as $k) {
|
||
|
|
$k = sha1($k);
|
||
|
|
$this->memcache->delete($k);
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Remove *all* values from cache
|
||
|
|
*
|
||
|
|
* @return boolean true on success, false on failure
|
||
|
|
*/
|
||
|
|
protected function purge()
|
||
|
|
{
|
||
|
|
return $this->memcache->flush();
|
||
|
|
}
|
||
|
|
}
|