- substr: documentation ( source)
- serialize: documentation ( source)
<?php
class CachingProxy
{
private $cache = null;
private $instance = null;
public function __construct(Memcache $cache, $instance)
{
$this->cache = $cache;
$this->instance = $instance;
}
public function __call($method, $arguments)
{
if (substr($method, 0, 3) !== 'get') {
$result = call_user_func_array($method, $arguments);
} else {
$uniqueId = $method . serialize($arguments);
$result = $this->cache->get($uniqueId);
if ($result === false) {
$result = call_user_func_array($method, $arguments);
$this->cache->set($uniqueId, $result);
}
}
return $result;
}
}
class ImportantService {
public function getInformation($uniqueIdentifier)
{
echo 'banana';
}
}
$cachedService = new CachingProxy(new Memcache(), new ImportantService());
$result = $cachedService->getInformation(123); // First call goes to a data source
$more = $cachedService->getInformation(123); // From cache now