What potential issues can arise from suppressing mail server warnings in PHP scripts?

Suppressing mail server warnings in PHP scripts can lead to important error messages being ignored, which can result in undetected issues such as failed email deliveries or misconfigured email settings. To avoid this, it is recommended to handle errors properly by checking the return values of mail functions and implementing error handling mechanisms.

// Example of handling mail function errors
if (mail($to, $subject, $message)) {
    echo "Email sent successfully";
} else {
    echo "Failed to send email";
}