What are the benefits and drawbacks of structurally changing PHP form pages to avoid the reloading issue?

Issue: The reloading issue occurs when a PHP form page reloads after submission, causing the form data to be resubmitted and potentially leading to duplicate entries in a database. To avoid this problem, we can implement a structural change using AJAX to submit form data asynchronously without reloading the page. Code snippet: 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form data here
    
    // Return a response (e.g., success message)
    echo "Form submitted successfully!";
    exit;
}
?>

<!DOCTYPE html>
<html>
<head>
    <title>PHP Form Page</title>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</head>
<body>
    <form id="myForm">
        <!-- Form fields here -->
        <input type="text" name="name" placeholder="Name">
        <input type="email" name="email" placeholder="Email">
        <button type="submit">Submit</button>
    </form>
    
    <script>
        $(document).ready(function() {
            $("#myForm").submit(function(e) {
                e.preventDefault();
                $.ajax({
                    type: "POST",
                    url: "process_form.php",
                    data: $(this).serialize(),
                    success: function(response) {
                        alert(response);
                        // Additional actions after form submission
                    }
                });
            });
        });
    </script>
</body>
</html>

Keywords

PHP form pages reloading benefits drawbacks

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