我正在尝试使用PHPMailer发送多封电子邮件（向每个收件人发送不同的电子邮件）

Question

第一次发布，因此非常感谢任何帮助...

• 我很高兴SQL查询可以正常工作并返回两个2行
• 我很高兴现在留言为“你好”
• 我已经浏览了许多答案，但都无法解决我的问题
• 此功能将仅将邮件发送给第一个收件人（共2个），而不发送给第二个收件人。

如果有人能告诉我我要去哪里错了，我将不胜感激。

public function sendOrderEmail($customer_order_id)
{ 
$sql3=" SELECT DISTINCT     w.user_id AS supplier_id, 
                            s.trading_name AS supplier_name, 
                            s.contact_email AS supplier_email  
        FROM supplier_info AS s 
        JOIN wine AS w ON w.user_id = s.id
        JOIN order_detail AS o ON o.wine_id = w.id
        WHERE o.order_no_id = :customer_order_id ORDER BY supplier_id DESC;";

$query3 = $this->db->prepare($sql3);
$query3->execute(array(':customer_order_id' => intval($customer_order_id)));

//$result3 = $query3->fetchAll();
while($row3 = $query3->fetch(PDO::FETCH_ASSOC)){
     //  while ($row3 = $query3->fetch()) {

         $supplier_name = $row3['supplier_name'];
         $supplier_email = $row3['supplier_email'];

// foreach($result3 as $key => $output){
    //$supplier_id = $output->supplier_id;
  //  $supplier_email = $output->email; */

    $mail = new PHPMailer;

        if (EMAIL_USE_SMTP) {
                            $mail->IsSMTP();
                            $mail->SMTPDebug = PHPMAILER_DEBUG_MODE;
                            $mail->SMTPAuth = EMAIL_SMTP_AUTH;

                            if (defined('EMAIL_SMTP_ENCRYPTION')) {
                            $mail->SMTPSecure = EMAIL_SMTP_ENCRYPTION;
                            }

                            $mail->Host = EMAIL_SMTP_HOST;
                            $mail->Username = EMAIL_SMTP_USERNAME;
                            $mail->Password = EMAIL_SMTP_PASSWORD;
                            $mail->Port = EMAIL_SMTP_PORT;
        } else {
                            $mail->IsMail();
        }

// Build email body
        $message = "<p>hello</p>";

         // fill mail with data
$mail->isHTML(true); 
$mail->From = "billyjlennon@gmail.com";
$mail->FromName = "Me";
$mail->AddAddress($supplier_email);
$mail->Subject = "Your request ";
$mail->Body = $message;

   // final sending and check
    if($mail->Send()) {
        $_SESSION["feedback_positive"][] = FEEDBACK_CONTACT_MAIL_SENDING_SUCCESSFUL;
        return true;
    } else {
        $_SESSION["feedback_negative"][] = FEEDBACK_CONTACT_MAIL_SENDING_ERROR . $mail-        >ErrorInfo;
        return false;
    } 
} 

Answer 1

首先，您应该首先检查PHPMailer文档，因为有一个示例可以完全做到这一点 。 你不能一直太努力。

在您的代码中，不要在循环周围每次都创建新的PHPMailer实例-保持相同的所有内容（isSmtp，Host，Port等）应在循环之前设置一次。 在循环内部，您应该执行以下操作：

• 设置邮件正文
• 设置收件人
• 发送信息
• 存储任何错误
• 清除收件人列表（使用clearAllRecipients() ）

发送检查之后，您还将获得return语句-这些语句将完全退出函数，因此它永远不会发送多条消息。 浏览列表时应收集错误，并在最后显示（或返回）它们。

Answer 2

正如上面@synchro所建议的，我在addAddress周围使用了while循环。 因为我使用的是PHP 5.3，Foreach迭代器语法无法正常工作（根据上述PHPmailer链接中的注释）。

然后，我将返回返回到while循环之外，一切正常。

这是起作用的代码：（对它的任何改进表示感谢）

public function sendOrderEmail($customer_order_id)
{
    $sql3 = " SELECT DISTINCT     w.user_id AS supplier_id,
                                s.trading_name AS supplier_name,
                                s.contact_email AS supplier_email
            FROM supplier_info AS s
            JOIN wine AS w ON w.user_id = s.id
            JOIN order_detail AS o ON o.wine_id = w.id
            WHERE o.order_no_id = :customer_order_id ORDER BY supplier_id DESC;";

    $query3 = $this->db->prepare($sql3);
    $query3->execute(array(':customer_order_id' => intval($customer_order_id)));

    $mail = new PHPMailer;

    if (EMAIL_USE_SMTP) {
        $mail->IsSMTP();
        $mail->Host = EMAIL_SMTP_HOST;
        $mail->Username = EMAIL_SMTP_USERNAME;
        $mail->Password = EMAIL_SMTP_PASSWORD;
        $mail->Port = EMAIL_SMTP_PORT;
        $mail->SMTPDebug = PHPMAILER_DEBUG_MODE;
        $mail->SMTPAuth = EMAIL_SMTP_AUTH;
        $mail->SMTPKeepAlive = true;
        if (defined('EMAIL_SMTP_ENCRYPTION')) {
            $mail->SMTPSecure = EMAIL_SMTP_ENCRYPTION;
        }
    } else {
        $mail->IsMail();
    }

    $mail->isHTML(true);
    $mail->From = "billyjlennon@gmail.com";
    $mail->FromName = "Me";

    while ($row3 = $query3->fetch(PDO::FETCH_ASSOC)) {
        // Build email body
        $message = "<p>hello</p>";

        // fill mail with data
        $mail->AddAddress($row3['supplier_email']);
        $mail->Subject = "Your request to " . $row3['supplier_name'];
        $mail->Body = $message;

        // final sending and check
        if ($mail->Send()) {
            //  $_SESSION["feedback_positive"][] = FEEDBACK_CONTACT_MAIL_SENDING_SUCCESSFUL;
            //return true;
        } else {
            $_SESSION["feedback_negative"][] = FEEDBACK_CONTACT_MAIL_SENDING_ERROR . $mail->ErrorInfo;
           // return false;
            break;
        }
        $mail->ClearAddresses();
    }
    return true;
}