public function remove($key)
    {
        $file = $this->getFileName($key);

        if ( !file_exists($file) )
        {
            return false;
        }

        unset(static::$keys[$key]);

        return (unlink($file))? true : false;
    }
public function remove($key)
    {
        $file = $this->getFileName($key);

        if ( !file_exists($file) )
        {
            return false;
        }

        unset(static::$keys[$key]);

        return (unlink($file))? true : false;
    }
public function remove ( $ key ) { $ file = $ this -> getFileName ( $ key ) ; if ( ! file_exists ( $ file ) ) { return false ; } unset ( static :: $ keys [ $ key ] ) ; return ( unlink ( $ file ) ) ? true : false ; }
Remove cache key

@param string $key
@return bool
Remove cache key