php获取两个时间戳差多少天时分秒

/**
     * 计算两个时间戳之间相差的日时分秒
     * @param $unixTime_1 开始时间戳
     * @param $unixTime_2 结束时间戳
     * @author 萤火虫 123246359@qq.com
     * @return array
     */
    function timeDiff($unixTime_1, $unixTime_2) {
        $timediff = abs($unixTime_2 - $unixTime_1);
        //计算天数
        $days = intval($timediff / 86400);
        //计算小时数
        $remain = $timediff % 86400;
        $hours = intval($remain / 3600);
        //计算分钟数
        $remain = $remain % 3600;
        $mins = intval($remain / 60);
        //计算秒数
        $secs = $remain % 60;
        return ['day' => $days, 'hour' => $hours, 'min' => $mins, 'sec' => $secs];
    }