thinkphp framework grouping: thinkphp obtains data that meets conditions

This article introduces to you how thinkphp implements grouping to obtain data that meets the conditions. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

thinkphp grouping to obtain data that meets the conditions:

<?php
//分组获取满足条件的一亩地ID
$cinema_id = $this->getCunIdById($change_num);

   //cun_use表(cun_id分组),获取要换取的大于该cun_use剩余的数量
    private function getCunIdById($change_num){
        $f="cu.cun_id,count(cu.id) as receive_num";
        $c=" and cu.cun_id != 0 and cu.cun_id= 2 and cu.user_id = 0 and cu.use_status = 0";
        $groupCunUse = $this->getExchageByCunId($c,$f);
        foreach ($groupCunUse as $gk => $gv) {
            if($gv[&#39;receive_num&#39;] >= $change_num){
                $cinema_id =$gv[&#39;cinema_id&#39;];
                break;
            }
        }
        return $cinema_id;
    }

  //cun_use表(cun_id分组),获取要换取的大于该cun_use剩余的数量
	public function getExchageByCunId($condition,$field){
		if (!$condition) {
			return false;
		}else{
			return M(&#39;cun_use&#39;)->table(&#39;cun_use cu,cun_piao cp&#39;)->where(&#39; cu.cun_id = cp.cun_id&#39;.$condition)->field($field)->group(&#39;tu.cun_id&#39;)->select();
		}
	}

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