What are some common pitfalls when creating a form mailer in PHP, especially in terms of handling form submission and displaying confirmation messages?

One common pitfall when creating a form mailer in PHP is not properly handling form submission and displaying confirmation messages. To address this issue, ensure that the form data is validated before processing it, and display a success message after the form is successfully submitted. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Validate form data
    // Process form data
    // Display success message
    echo "Form submitted successfully!";
}
?>

Keywords

form mailer PHP handling form submission confirmation messages error handling

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