php mailer在收到任何不良电子邮件后不会将邮件发送到其他电子邮件地址

Question

我编写了一个 PHP 邮件程序代码来向多个收件人发送电子邮件。但不幸的是，我在脚本中发现了一个缺点，我正在从数据库中获取电子邮件，让我们看看它是否获取 5 封电子邮件并尝试向所有这些电子邮件发送电子邮件，并且第 3 封电子邮件不是有效地址（任何原因）然后我的脚本只是通过向 1-2 发送邮件并显示错误无效电子邮件 3 和“退出”（不再继续）来完全“存在”该功能，我想要的是“退出”它应该跳过该迭代语句（电子邮件）的功能然后像“继续”语句一样继续下一个。同样在代码中，消息和主题是从另一个由表单组成的页面发送的。 这是代码：

<?php
// Import PHPMailer classes into the global namespace
// These must be at the top of your script, not inside a function
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
if(isset($_SESSION['userIs']))
{
$message = $_POST['message'];
$subject = $_POST['subject'];
//Load composer's autoloader
require './PHPMailer/vendor/autoload.php';
$mail = new PHPMailer(true);                              // Passing `true` enables exceptions
try {
    //Server settings
    $mail->SMTPDebug = 1;                                 // Enable verbose debug output
    $mail->isSMTP();                                      // Set mailer to use SMTP
    $mail->Host = 'smtp.gmail.com';  // Specify main and backup SMTP servers
    $mail->SMTPAuth = true;                               // Enable SMTP authentication
    $mail->Username = 'trying.test.00';                 // SMTP username
    $mail->Password = 'trying.test.00';                           // SMTP password
    $mail->SMTPSecure = 'tls';                            // Enable TLS encryption, `ssl` also accepted
    $mail->Port = 587;                                    // TCP port to connect to
    //Recipients
    $mail->setFrom('trying.test.00@gmail.com', 'Tester');
include('./create-connection.php');
$get_list = "select name,email from signup";
$result = $conn->query($get_list) ;
if($result->num_rows>0)
{
    while($row_list = $result->fetch_assoc())
    {
        $to = $row_list['email'];
        $name = $row_list['name'];
        $mail->addAddress($to,$name);     // Add a recipient    
    }
}
    //Content
    $mail->isHTML(true);                                  // Set email format to HTML
    $mail->Subject = $subject;
    $mail->Body    = $message;
    $mail->AltBody = strip_tags($message);
    if($mail->send())
    {
    echo '<div class=""><b>'.$to.'</b> -> Status <i class="fa fa-check"></i></div>';
    }
} catch (Exception $e) {
echo '<div class=""><b>'.$to.'</b> -> Status <i class="fa fa-times"></i></div>';   
}
$conn->close();
}
?>

Answer 1

您可以在发送前验证电子邮件地址。

或者更好：

您可以在插入数据库之前验证电子邮件地址，这样您就知道数据库只包含有效数据。

Answer 2

只需要添加一个验证来检查电子邮件是否有效，而无需在while循环中发送电子邮件，然后如果电子邮件有效，则处理邮件，否则“继续”当前迭代（电子邮件）并跳转到下一封电子邮件。 因此在更改代码后 ->

  <?php
    // Import PHPMailer classes into the global namespace
    // These must be at the top of your script, not inside a function
    use PHPMailer\PHPMailer\PHPMailer;
    use PHPMailer\PHPMailer\Exception;
    if(isset($_SESSION['userIs']))
    {
    $message = $_POST['message'];
    $subject = $_POST['subject'];
    //Load composer's autoloader
    require './PHPMailer/vendor/autoload.php';
    $mail = new PHPMailer(true);                              // Passing `true` enables exceptions
    try {
        //Server settings
        $mail->SMTPDebug = 1;                                 // Enable verbose debug output
        $mail->isSMTP();                                      // Set mailer to use SMTP
        $mail->Host = 'smtp.gmail.com';  // Specify main and backup SMTP servers
        $mail->SMTPAuth = true;                               // Enable SMTP authentication
        $mail->Username = 'trying.test.00';                 // SMTP username
        $mail->Password = 'trying.test.00';                           // SMTP password
        $mail->SMTPSecure = 'tls';                            // Enable TLS encryption, `ssl` also accepted
        $mail->Port = 587;                                    // TCP port to connect to
        //Recipients
        $mail->setFrom('trying.test.00@gmail.com', 'Tester');
    include('./create-connection.php');
    $get_list = "select name,email from signup";
    $result = $conn->query($get_list) ;
    if($result->num_rows>0)
    {
        while($row_list = $result->fetch_assoc())
        {
    //add a validation here 

    if(!filter_var($row_list['email'], FILTER_VALIDATE_EMAIL))
            {
                echo "invalid email".$row_list['email'];
            continue;   
            }
       else
       {
           $to = $row_list['email'];
            $name = $row_list['name'];

            $mail->addAddress($to,$name);     // Add a recipient
        }
        }
    }
        //Content
        $mail->isHTML(true);                                  // Set email format to HTML
        $mail->Subject = $subject;
        $mail->Body    = $message;
        $mail->AltBody = strip_tags($message);
        if($mail->send())
        {
        echo '<div class=""><b>'.$to.'</b> -> Status <i class="fa fa-check"></i></div>';
        }
    } catch (Exception $e) {
    echo '<div class=""><b>'.$to.'</b> -> Status <i class="fa fa-times"></i></div>';   
    }
    $conn->close();
    }
    ?>