How can one troubleshoot PHP scripts that are not functioning as expected, like in the scenario of email sending failure?

To troubleshoot PHP scripts that are not sending emails as expected, you can check the SMTP settings, verify the recipient's email address, and ensure that the mail function is correctly configured in your PHP script. You can also check for any error messages in the server logs or use a debugging tool to track the issue.

// Example PHP script to send an email using the mail function

$to = "recipient@example.com";
$subject = "Test Email";
$message = "This is a test email.";
$headers = "From: sender@example.com";

if (mail($to, $subject, $message, $headers)) {
    echo "Email sent successfully.";
} else {
    echo "Email sending failed.";
}