public function hasTags(array $tags)/*# : array */
    {
        $x = [];
        foreach ($tags as $tag) {
            if ($this->hasTag($tag)) {
                $x[] = $tag;
            }
        }
        return $x;
    }
public function hasTags(array $tags)/*# : array */
    {
        $x = [];
        foreach ($tags as $tag) {
            if ($this->hasTag($tag)) {
                $x[] = $tag;
            }
        }
        return $x;
    }
Return array of tags existed, return empty [] if no match found

@param  array $tags tags to match against
@return array
@access public
@api