function __unset($key) { parent::__unset($key); zdelete($this->_realKey($key)); }
function __unset($key) { parent::__unset($key); output_cache_remove_key($this->_realKey($key)); }
function __unset($key) { parent::__unset($key); wincache_ucache_delete($this->_realKey($key)); }
function __unset($key) { parent::__unset($key); $this->_memcache->delete($this->_realKey($key)); }
function __unset($key) { parent::__unset($key); zend_shm_cache_delete($this->_realKey($key)); }