src/Nether/Cache/Diskcache.php
public function Drop($key) {
		if(!$this->IsPathValid()) return;

		$file = $this->GetFileName($key);
		if(file_exists($file)) {
			if(!is_writable($file)) {
				/*//todo/
				log this error.
				//*/
				echo "Unable to remove cache {$file}", PHP_EOL;
			} else {
				unlink($file);
			}
		}

		return;
	}
public function Drop($key) {
		if(!$this->IsPathValid()) return;

		$file = $this->GetFileName($key);
		if(file_exists($file)) {
			if(!is_writable($file)) {
				/*//todo/
				log this error.
				//*/
				echo "Unable to remove cache {$file}", PHP_EOL;
			} else {
				unlink($file);
			}
		}

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