public function has(/*# string */ $key)/*# : int */
    {
        // try front-end cache first
        $res = $this->frontHas($key);
        if ($res) {
            return $res;
        }

        // try backend cache
        return $this->backHas($key);
    }
public function has(/*# string */ $key)/*# : int */
    {
        // try front-end cache first
        $res = $this->frontHas($key);
        if ($res) {
            return $res;
        }

        // try backend cache
        return $this->backHas($key);
    }
public function has ( /*# string */ $ key ) /*# : int */ { // try front-end cache first $ res = $ this -> frontHas ( $ key ) ; if ( $ res ) { return $ res ; } // try backend cache return $ this -> backHas ( $ key ) ; }
Either end has is ok

{inheritDoc}
Either end has is ok