Phpmailer debug output

PHPMailer provides several ways to debug and troubleshoot issues with your email sending code. Here are a few methods to output debug information:

1. Enable debug output: You can enable debug output by setting the Debugoutput property to a function that will output the debug information. For example:

   $mail->Debugoutput = function($str, $level) {
    echo "<p>Debug: $str</p>";
   };

   This will output the debug information as HTML paragraphs.

2. Set the SMTPDebug option: You can set the SMTPDebug option to a value between 1 and 3 to control the level of debug output. For example:

   $mail->SMTPDebug = 2;

   This will output more detailed debug information, including the SMTP conversation.

3. Use the ErrorInfo property: You can access the error information using the ErrorInfo property. For example:

   echo $mail->ErrorInfo;

   This will output the last error message.

4. Use the PrintDebug method: You can use the PrintDebug method to output the debug information. For example:

   $mail->PrintDebug();

   This will output the debug information as a string.

Here's an example of how you can use these methods to output debug information:

<?php

require_once 'PHPMailer/PHPMailer.php';
require_once 'PHPMailer/SMTP.php';

$mail = new PHPMailer\PHPMailer\PHPMailer();

$mail->Debugoutput = function($str, $level) {
    echo "<p>Debug: $str</p>";
};

$mail->SMTPDebug = 2;

$mail->isSMTP();
$mail->Host = 'smtp.example.com';
$mail->Port = 587;
$mail->SMTPAuth = true;
$mail->Username = '[email protected]';
$mail->Password = 'your_password';

$mail->setFrom('[email protected]', 'Your Name');
$mail->addAddress('[email protected]', 'Recipient Name');

$mail->Subject = 'Test email';
$mail->Body = 'This is a test email';

if (!$mail->send()) {
    echo "Error: ". $mail->ErrorInfo;
} else {
    echo "Email sent successfully";
}

$mail->PrintDebug();

?>

This code will output the debug information as HTML paragraphs, and also print the error information if the email sending fails.