public static function clear($filename)
    {
        $filename = static::path($filename);

        if (!file_exists($filename)) {
            return;
        }

        if (!unlink($filename)) {
            throw new \Exception("Unable to delete file (" . $filename . ")");
        }
    }
public static function clear($filename)
    {
        $filename = static::path($filename);

        if (!file_exists($filename)) {
            return;
        }

        if (!unlink($filename)) {
            throw new \Exception("Unable to delete file (" . $filename . ")");
        }
    }
public static function clear ( $ filename ) { $ filename = static :: path ( $ filename ) ; if ( ! file_exists ( $ filename ) ) { return ; } if ( ! unlink ( $ filename ) ) { throw new \ Exception ( "Unable to delete file (" . $ filename . ")" ) ; } }
Clear a key within the cache data.

@param string $filename The key of the cached data

@return void
Clear a key within the cache data .