How Can I Effectively Handle Errors in PHPMailer?

Error Handling in PHPMailer

Error handling in PHPMailer can be a bit confusing, especially if you're not familiar with how it works. By default, PHPMailer will echo any errors encountered directly to the browser, which can break any error handling you implement.

To silence these messages, you can use PHPMailer's exceptions feature. By default, PHPMailer is not configured to throw exceptions, but you can enable it by setting the exceptions parameter to true when creating a new PHPMailer instance.

For example:

$mail = new PHPMailer(true);

Once you have enabled exceptions, you can catch any errors that occur using try/catch blocks. For example:

try {
    $mail->AddReplyTo('[email protected]', 'First Last');
    $mail->AddAddress('[email protected]', 'John Doe');
    $mail->SetFrom('[email protected]', 'First Last');
    $mail->AddReplyTo('[email protected]', 'First Last');
    $mail->Subject = 'PHPMailer Test Subject via mail(), advanced';
    $mail->AltBody = 'To view the message, please use an HTML compatible email viewer!'; // optional - MsgHTML will create an alternate automatically
    $mail->MsgHTML(file_get_contents('contents.html'));
    $mail->AddAttachment('images/phpmailer.gif');      // attachment
    $mail->AddAttachment('images/phpmailer_mini.gif'); // attachment
    $mail->Send();
    echo "Message Sent OK\n";
} catch (phpmailerException $e) {
    echo $e->errorMessage(); //Pretty error messages from PHPMailer
} catch (Exception $e) {
    echo $e->getMessage(); //Boring error messages from anything else!
}

By handling exceptions, you can prevent PHPMailer from echoing error messages to the browser and instead display them in a more controlled manner.

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