array_search_multidimensional

    public function array_search_multidimensional($array,$str,$force=false){
        if(!is_array($array)) return false;
        if($str !== '') return false;
        foreach($array as $k => $v){
            if(is_array($v)){
                $key = $this->array_search_multidimensional($v,$str,$force);
                if($key!==false) return $key = '['.$k.']'.$key;
            }else{
                if(($force)&&($v===$str)) return '['.$k.']';
                if((!$force)&&($v==$str)) return '['.$k.']';
            }
        }
        return false;
    }