How can PHP developers troubleshoot and debug mail sending issues in their scripts, especially after a server update?

When PHP developers encounter mail sending issues after a server update, they can troubleshoot and debug the problem by checking the mail server settings, ensuring proper authentication credentials are used, and verifying that the mail function is correctly configured in the PHP script. Additionally, they can enable error reporting to identify any specific errors or warnings related to the mail sending process. 

// Example PHP code snippet to troubleshoot mail sending issues
error_reporting(E_ALL);
ini_set('display_errors', 1);

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

if (mail($to, $subject, $message, $headers)) {
    echo "Mail sent successfully";
} else {
    echo "Failed to send mail";
}

Keywords

PHP mail sending troubleshooting debugging server update

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