if (!isset($this->data[$key]) || time() > $this->data[$key]['ttl']) {
return null;
}
return $this->data[$key]['value'];
}
public function set($key, $value, $ttl = 0)
{
$this->data[$key] = array('value' => $value, 'ttl' => time() + $ttl);
return true;
}
public function delete($key)
{
unset($this->data[$key]);
}
public function flush()
{
$this->data = array();
}
}
//设置要使用的缓存类型
if (class_exists('Yac')) {
$adapter = new CacheHelper_Yac();
} else {
if (function_exists('apc_fetch')) {
$adapter = new CacheHelper_Apc();
} else {
$adapter = new CacheHelper_Request();
}
}
CacheHelper::setAdapter($adapter);
