What are some recommended methods for debugging PHP scripts that involve sending emails to troubleshoot issues like missing attachments?

When troubleshooting PHP scripts that involve sending emails with missing attachments, one recommended method is to check the file path and ensure that the attachment is properly included in the email function. Additionally, using error reporting functions such as error_log() or var_dump() can help identify any issues with the attachment file.

// Check if the attachment file exists and has the correct file path
$attachment_file = '/path/to/attachment.pdf';
if (file_exists($attachment_file)) {
    // Include the attachment in the email function
    $mail->addAttachment($attachment_file);
} else {
    // Log an error if the attachment file is missing
    error_log('Attachment file not found: ' . $attachment_file);
}