새로 등록한 회원에게 고객 서비스가 자동으로 할당되도록 하려면 어떻게 해야 합니까?

<code>$number = file_get_contents("log.txt");
file_put_contents("log.txt", ($number +1)%3);</code>

<code><?php

function distribution_cs($user_id,$cs_total=3){

    if($user_id%$cs_total==0){
        return $cs_total;
    }
    return $user_id%$cs_total;
}


echo distribution_cs(1).",";
echo distribution_cs(2).",";
echo distribution_cs(3).",";
echo distribution_cs(4).",";
echo distribution_cs(5).",";
echo distribution_cs(6).",";
echo distribution_cs(7).",";
echo distribution_cs(8).",";
echo distribution_cs(9).",";
echo distribution_cs(10).",";
echo distribution_cs(11).",";
echo distribution_cs(12).",";
echo distribution_cs(13).",";
echo distribution_cs(14,4).",";
echo distribution_cs(15,4).",";
echo distribution_cs(16,4).",";
echo distribution_cs(17,4).",";
echo distribution_cs(18,4).",";
echo distribution_cs(19,4).",";
echo distribution_cs(20,4).",";
echo distribution_cs(21,5).",";</code>

<code><?php

class serviceFactory{
    private $num;
    private $count = 0;

    function __construct($num){
        $this->setNum($num);
    }

    function getService(){
        if($this->count >= $this->num){
            $this->count = 0;
        }
        $this->count ++;
        return $this->count;
    }

    function setNum($num){
        $this->num = $num;
    }

}

$factory = new serviceFactory(3);
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
$factory->setNum(4);
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";</code>

<code>if ( 空闲状态的客服数 >= 0 ){
    // 分配给最先进入空闲状态的那个客服
}else{
    // 说明现在每个客服都有用户在咨询
    // 并且可能某些客服下还有在排队等待的用户
    获取每个客服 **当前咨询任务** 的开始时间
    
    将这个用户分配给 当前资讯任务 的开始时间最早的 并且 后面排队人数最少的哪个客服
    // 其实上面还有一个权重的问题，比如 A 客服 当前客户资讯任务开始时间比 B 早 2分钟，但是 A 后面排队的人数比 B 客服多 1个，这就要靠 权重值 来计算是分配给 A 还是 B。
}
</code>