PHPMailer 提交表单后不发送两封电子邮件

Question

我在提交表单后使用 PHPMailer 发送两封不同的电子邮件时遇到问题。问题是脚本回显“已创建”，但两封电子邮件均未发送。我正在使用 PHPMailer 库来处理电子邮件发送过程。这是我的代码：

require("connect.php");

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;

if (isset($_POST["full-name"])) {

    require "PHPMailer/src/PHPMailer.php";
    require "PHPMailer/src/SMTP.php";
    require "PHPMailer/src/Exception.php";

    $userFullName = $_POST["full-name"];
    $userEmail = $_POST["email"];
    $userPassword = $_POST["password"];
    $userAddress = $_POST["address"];
    $userType = $_POST["type"];
    $userPhone = $_POST["phone"];
    $date2 = date("j F Y h:i A");

    $check_user = "SELECT * FROM `user_accounts` WHERE `EMAIL` = '$userEmail'";
    $check_result = $conn->query($check_user);
    $token = bin2hex(random_bytes(64));
    $verificationLink = "**********************?token=$token"; // hidden for security purpose
    if ($check_result->num_rows == 0) {
        sendEmailToOwner($userFullName, $userEmail, $userType, $userAddress, $userPhone, $date2);
        sendVerificationEmail($userFullName, $userEmail, $verificationLink, $conn, $userPassword, $userAddress, $userType, $userPhone, $token);
    } else {
        echo "User is already registered";
    }
}


function sendEmailToOwner($userFullName, $userEmail, $userType, $userAddress, $userPhone, $date2)
{
    $mail = new PHPMailer(true);
    try {
        $mail->isSMTP();
        $mail->Host = 'valeexecutive.com';
        $mail->SMTPSecure = 'ssl';
        $mail->Port = 465;
        $mail->SMTPAuth = true;
        $mail->Username = '[email protected]';
        $mail->Password = '**********'; //webmail password
        $mail->setFrom('[email protected]', 'Vale Executive Cars');
        $mail->addAddress('[email protected]');
        $mail->isHTML(true);
        $mail->Subject = 'New Account Created';
        $mail->Body = '';    // I removed the body for posting on stackoverflow for some purpose
    $mail->send();
    } catch (Exception $e) {
        echo "Email could not be sent. Mailer Error: {$mail->ErrorInfo}";
    }
}


function sendVerificationEmail($userFullName, $userEmail, $verificationLink, $conn, $userPassword, $userAddress, $userType, $userPhone, $token)
{
    $mail = new PHPMailer(true);
    try {
        $mail->isSMTP();
        $mail->Host = 'valeexecutive.com';
        $mail->SMTPAuth = true;
        $mail->Username = '[email protected]';
        $mail->Password = '********'; // webmail password
        $mail->SMTPSecure = 'ssl';
        $mail->Port = 465;
        $mail->isHTML(true);
        $mail->setFrom('[email protected]', 'Vale Executive Cars');
        $mail->addAddress($userEmail);
        $mail->AddEmbeddedImage('images/logos/logo.png', 'logo', 'logo.png');
        $mail->Subject = 'Account Verification';
        $mail->Body = '';    // I removed the body for posting on stackoverflow for some purpose
        if ($mail->send()) {
            $date = date("Y-m-d H:i:s");
            $query = "INSERT INTO `user_accounts`
                            (`FULL_NAME`, `EMAIL`, `PASSWORD`, `ADDRESS`, 
                            `TYPE`, `PHONE`, `TOKEN`, `VERIFIED`, 
                            `ACCOUNT_CREATED_AT`) 
                    VALUES ('$userFullName', '$userEmail', '" . 
                            md5($userPassword) . "', '$userAddress', 
                            '$userType', '$userPhone', '$token', 0, 
                            '$date')";
            $result = mysqli_query($conn, $query);
            if ($result === TRUE) {
                echo "created";
            } else {
                echo "Error: " . mysqli_error($conn);
            }
        }
    } catch (Exception $e) {
        echo "Email could not be sent. Mailer Error: {$mail->ErrorInfo}";
    }
}

问题： 提交表单后，我尝试发送两封不同的电子邮件：一封发送给所有者，另一封用于帐户验证。该脚本似乎有效，因为它回显“已创建”，表明 sendVerificationEmail 函数已成功执行。但是，这两封电子邮件都没有发送给各自的收件人。

我尝试过的： 我已确保正确包含必要的 PHPMailer 依赖项，并确认脚本成功到达 sendEmailToOwner 和 sendVerificationEmail 函数。我还通过使用 try-catch 块处理异常和打印错误消息来检查任何潜在的错误。

我的问题：

1. 我的代码中是否存在任何可能导致此行为的潜在问题？
2. 如何排查并修复此问题以确保表单提交后两封电子邮件均成功发送？

Answer 1

您是否阅读过这里关于 SO 的许多“PHP 邮件无法正常工作”问题？发送和接收电子邮件之间有很多步骤。

首先要检查的是电子邮件服务器上的日志。

服务器真的使用SMTPS吗？现在在端口 465 上已弃用此方法，其中 STARTTLS 是正确的方法。

您还可以考虑在 PHPmailer 中启用调试（您需要启用调试并注入 PSR-3 记录器）。