src/Nether/Cache.php
public function Drop($key,$use=null) {
	/*//
	@argv string Key
	@argv string Key, array Drivers
	drop a specific key from the cache.
	//*/

		if(!$use)
		$use = Option::Get('cache-drivers-use');

		foreach($this->Drivers as $dkey => $driver) {
			if(!in_array($dkey,$use)) continue;

			$driver->Drop($this->GetFullKey($key));
		}

		return;
	}
public function Drop($key,$use=null) {
	/*//
	@argv string Key
	@argv string Key, array Drivers
	drop a specific key from the cache.
	//*/

		if(!$use)
		$use = Option::Get('cache-drivers-use');

		foreach($this->Drivers as $dkey => $driver) {
			if(!in_array($dkey,$use)) continue;

			$driver->Drop($this->GetFullKey($key));
		}

		return;
	}
//////////////