PHP多次截取多位數組，取得相應的值

數組如下：
    Array (
        [0] => 00:01:24| /api/get.html?act=GetUserOrderList&F=android&V=1.8.0&key=1445961683170&sign=061cffe2b3ee&user_id=709&o_type=1&page=1&size=100
        [1] => 00:01:24| /api/get.html?act=GetUserOrderList&F=android&V=1.8.0&key=1445961683158&sign=10dda7993ac0&user_id=709&o_type=1&page=1&size=100
        [2] => 11:13:06| /api/geta.html?order_by_id=&act=GetGoodslist&V=1.2.0&page=1&sign=a4519e9950d2&F=ios&key=14460019873701468300&type_id=&g_mark=
    );

    function InsertLog()
    {
        foreach($user as $r)
        {
            //調用數據處理方法
            $key=$this->get_arraykey($r);
            var_dump($key);
        }
    }

    /**
     * @desc  數據處理
     * @author 張昀
     * @return void
     */
    function get_arraykey($data)
    {
        $str=explode("|",$data);
        $strkey=explode("?",$str[1]);
        foreach(explode("&",$strkey[1]) as $v) {
            $key=explode("=",$v);
            if($key[0]=="act") {
                $get_key["act"]=$key[1];
            }
            if($key[0]=="F") {
                $get_key["F"]=$key[1];
            }
            if($key[0]=="V") {
                $get_key["V"]=$key[1];
            }
            if($key[0]=="user_id") {
                $get_key["user_id"]=$key[1];
            }
        }
        //輸出數據及格式
        return array (
            'time' => $str[0] ,
            'strkey' => trim($strkey[0]) ,
            'act' => "act=".$get_key["act"] ,
            'f'=> $get_key["F"],
            'v'=> $get_key["V"],
            'user_id'=> $get_key["user_id"]
        );
    }