PHP PDO获取结果

Question

我有以下脚本可以正常运行，但我认为

a）丑陋；

b）运行脚本后，它无法满足我的需求。

确切地说，该脚本应按以下方式工作：

1）SQL从给定表中选择一个注册日期在上个月之内的所有业务代表，并按业务代表编号分组，其中计数大于1的业务代表按注册日期升序排列。 简而言之，返回上个月注册了多个成员的座席列表。

2）返回结果后，会将整个列表通过电子邮件发送给我自己（不确定如何完成此操作），并更新座席奖金表（注册一个以上成员的座席将获得奖金）。

为了实现这一点，我的脚本当前正在运行foreach循环（我讨厌）以打破必要的字段数据。

任何改进过程的建议都值得赞赏。

脚本：

<?php

    try {   
            $db = new PDO('mysql:host=localhost;dbname=dbname', 'username', 'password');
            $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
            $db->beginTransaction();

            $sql = $db->query("SELECT AGENT FROM tablename WHERE enroll_date > DATE_SUB(CURDATE(),INTERVAL 1 MONTH) GROUP BY AGENT HAVING COUNT(AGENT) >= 0 ORDER BY enroll_date ASC");             

            $result = $sql->fetchALL(PDO::FETCH_ASSOC);
            foreach($result as $key=>$val) {
                foreach($val as $ball=>$agentid) {

                    $sql2 = "UPDATE agent_prizes SET prize=?, method=? WHERE AGENT = '$agentid'";

                    $stmt = $db->prepare($sql2);
                    $stmt->execute(array("Y", "COMP"));


                    require('../phpmailer/class.phpmailer.php');

                    $mail             = new PHPMailer();
                    $mail->Username   = "user@domain.com";
                    $mail->Password   = "";
                    $mail->SetFrom("user@domain.com");
                    $mail->Subject    = "Subject";
                    $mail->MsgHTML("Message");

   //I NEED TO RUN YET ANOTHER QUERY SELECT ABOVE TO CAPTURE THE AGENT EMAIL ADDRESS, LETTING THEM KNOW THEY HAVE WON A PRIZE
                        $mail->AddAddress($row["EmailAddress"]);
                        $mail->Send();
                        $mail->ClearAttachments();
                        $mail->ClearAllRecipients();
                        $mail->ClearReplyTos();    
                    }
                }



            $db->commit();
            $db->null;
        }

    catch (PDOException $e)
        {
            $db->rollback();
            echo $e->getMessage();

            exit;
        }
?>

Answer 1

这摆脱了第二个foreach并且（希望-我还没有测试过）在一个选择中获得了代理的电子邮件地址：

...
$sql = $db->query("SELECT tablename.AGENT AGENT, agent.EMAIL EMAIL, 
                   FROM tablename, agent 
                   WHERE enroll_date > DATE_SUB(CURDATE(),INTERVAL 1 MONTH) AND tablename.AGENT = agent.AGENT 
                   GROUP BY tablename.AGENT 
                   HAVING COUNT(tablename.AGENT) > 1 
                   ORDER BY enroll_date ASC");             
$result = $sql->fetchALL(PDO::FETCH_ASSOC);
foreach($result as $row)
{
  $sql2 = "UPDATE agent_prizes 
           SET prize=?, method=? 
           WHERE AGENT = '{$row["AGENT"]}'";
...