PHP Mailer 返回 PHP 致命错误：未捕获 PHPMailer\PHPMailer\Exception：SMTP 错误：无法进行身份验证

我看到了很多类似的问题，比如我的问题，但从来没有一个对我有帮助的。我正在尝试 PHPMailerhttps://github.com/PHPMailer/PHPMailer https://github.com/PHPMailer/PHPMailer。我正在使用 xampp 服务器对其进行测试，一切正常。但是当我在我的页面上上传整个 phpMailer 时，出现了一些问题。在我的日志文件中，我仍然收到此错误：

PHP 致命错误：未捕获 PHPMailer\PHPMailer\Exception：SMTP 错误：无法进行身份验证。在/web/test/vendor/phpmailer/phpmailer/src/PHPMailer.php:2089 堆栈跟踪： #0 web/test/vendor/phpmailer/phpmailer/src/PHPMailer.php(1900): PHPMailer\PHPMailer\PHPMailer->smtpConnect() #1 web/test/vendor/phpmailer/phpmailer/src/PHPMailer.php(1614): PHPMailer\PHPMailer\PHPMailer->smtpSend() #2 web/test/vendor/phpmailer/phpmailer/src/PHPMailer.php(1447): PHPMailer\PHPMailer\PHPMailer->postSend() #3 web/test/idk.php(31): PHPMailer\PHPMailer\PHPMailer->send() #4 {主要} 抛出在 web/test/vendor/phpmailer/phpmailer/src/PHPMailer.php 第 2089 行`

有谁知道，如何解决这个问题？我很确定我的登录凭据没问题。奇怪的是它在 xampp 上工作得很好，但在我的页面上却不行。我使用的是最新的 PHPMailer，并且我没有编辑任何内容，因此您可以在 PHPMailer github 上查看代码。 如果有人需要更多信息，请告诉我。 太感谢了！

编辑：这是我的 idk.php 文件（代码片段不能正常工作，但我认为您可以阅读它）：

<?php 
declare( strict_types = 1 );

// Check if the form is submitted
if ( isset( $_POST['submit'] ) ) {
    // retrieve the form data by using the element's name attributes value as key
    
    $subject = $_REQUEST['subject'];
    $body = $_REQUEST['body'];
    $sender = $_REQUEST['sender'];

    require __DIR__ . '/vendor/autoload.php';

    $mailer = new \PHPMailer\PHPMailer\PHPMailer( true );
    //$mailer->SMTPDebug = \PHPMailer\PHPMailer\SMTP::DEBUG_SERVER tento řádek povoluje client -> server a server -> client zprávy

    $mailer->isSMTP();
    $mailer->Host = 'smtp.gmail.com';
    $mailer->SMTPAuth = true;
    $mailer->Username = '[email protected] /cdn-cgi/l/email-protection';
    $mailer->Password = 'myPassword';
    $mailer->SMTPSecure = \PHPMailer\PHPMailer\PHPMailer::ENCRYPTION_STARTTLS;
    $mailer->Port = 587;
    $mailer->setFrom( '[email protected] /cdn-cgi/l/email-protection' );
    $mailer->addReplyTo( '[email protected] /cdn-cgi/l/email-protection' );
    $mailer->addAddress( $sender );
    $mailer->isHTML( true );
    $mailer->Subject = $subject;
    $mailer->Body = $body;
    $mailer->send();
}
?>

也许我应该说我在我的网络托管上使用 .htaccess 文件。我不确定，但这也许就是我收到这些错误的原因。当我尝试访问 idk.php 文件时，我收到 http 错误 500。我做了一些研究，发现这个 500 错误和 htaccess 文件之间存在某种联系。

编辑： 我关闭了不太安全的应用程序，但它仍然不起作用。我将端口更改为 465，现在此文件中的第 2076 行出现错误：https://github.com/PHPMailer/PHPMailer/blob/master/src/PHPMailer.php https://github.com/PHPMailer/PHPMailer/blob/master/src/PHPMailer.php

这是 Gmail 问题，您需要关闭“不太安全的应用程序访问”

更多信息：https://support.google.com/accounts/answer/6010255?hl=en#zippy=%2Cif-less-secure-app-access-is-on-for-your-account%2Cif-less-secure-app -您的帐户的访问权限已关闭 https://support.google.com/accounts/answer/6010255?hl=en#zippy=%2Cif-less-secure-app-access-is-on-for-your-account%2Cif-less-secure-app-access-is-off-for-your-account

关闭“不太安全的应用程序访问”

https://myaccount.google.com/lesssecureapps https://myaccount.google.com/lesssecureapps

示例（PHPMailer v6.2.0）

<?php

/**
 * This example shows settings to use when sending via Google's Gmail servers.
 * This uses traditional id & password authentication - look at the gmail_xoauth.phps
 * example to see how to use XOAUTH2.
 * The IMAP section shows how to save this message to the 'Sent Mail' folder using IMAP commands.
 */

//Import PHPMailer classes into the global namespace
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;

require 'vendor/autoload.php';

//Create a new PHPMailer instance
$mail = new PHPMailer();

//Tell PHPMailer to use SMTP
$mail->isSMTP();

//Enable SMTP debugging
// SMTP::DEBUG_OFF = off (for production use)
// SMTP::DEBUG_CLIENT = client messages
// SMTP::DEBUG_SERVER = client and server messages
$mail->SMTPDebug = SMTP::DEBUG_SERVER;

//Set the hostname of the mail server
$mail->Host = 'smtp.gmail.com';
// use
// $mail->Host = gethostbyname('smtp.gmail.com');
// if your network does not support SMTP over IPv6

//Set the SMTP port number - 587 for authenticated TLS, a.k.a. RFC4409 SMTP submission
$mail->Port = 587;

//Set the encryption mechanism to use - STARTTLS or SMTPS
$mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;

//Whether to use SMTP authentication
$mail->SMTPAuth = true;

//Username to use for SMTP authentication - use full email address for gmail
$mail->Username = 'CHANGEME';

//Password to use for SMTP authentication
$mail->Password = 'CHANGEME';

//Set who the message is to be sent from
$mail->setFrom('[email protected] /cdn-cgi/l/email-protection', 'First Last');

//Set an alternative reply-to address
$mail->addReplyTo('[email protected] /cdn-cgi/l/email-protection', 'First Last');

//Set who the message is to be sent to
$mail->addAddress('CHANGEME', 'John Doe');

//Set the subject line
$mail->Subject = 'PHPMailer GMail SMTP test';

$mail->msgHTML('This is a plain-text message body');


//Replace the plain text body with one created manually
$mail->AltBody = 'This is a plain-text message body';

//Attach an image file

//send the message, check for errors
if (!$mail->send()) {
    echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
    echo 'Message sent!';
    //Section 2: IMAP
    //Uncomment these to save your message in the 'Sent Mail' folder.
    #if (save_mail($mail)) {
    #    echo "Message saved!";
    #}
}

取自https://github.com/PHPMailer/PHPMailer/blob/master/examples/gmail.phps https://github.com/PHPMailer/PHPMailer/blob/master/examples/gmail.phps