What are common pitfalls to avoid when resetting form data after submission in PHP?

Common pitfalls to avoid when resetting form data after submission in PHP include not properly resetting form fields, not handling validation errors, and not redirecting to a new page after form submission. To solve this, you should clear the form fields after submission, display any validation errors, and redirect the user to a new page to prevent form resubmission. 

<?php
// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form data

    // Reset form fields
    $_POST = array();

    // Display any validation errors
    // Redirect to a new page
    header("Location: success.php");
    exit;
}
?>

<!-- HTML form -->
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    <!-- Form fields -->
</form>

Keywords

form data submission resetting PHP validation

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