How can the PHP script be modified to address the issue of data not updating after form submission?

Issue: The data is not updating after form submission because the form data is not being processed correctly in the PHP script. To solve this issue, the PHP script needs to properly handle the form data, update the database with the new information, and then redirect the user to a new page confirming the update. 

<?php
// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form data
    $newData = $_POST['new_data'];
    
    // Update database with new data
    // Add your database connection and update query here
    
    // Redirect user to confirmation page
    header("Location: confirmation.php");
    exit();
}
?>

<!DOCTYPE html>
<html>
<head>
    <title>Update Data</title>
</head>
<body>
    <form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
        <label for="new_data">New Data:</label>
        <input type="text" id="new_data" name="new_data">
        <button type="submit">Update Data</button>
    </form>
</body>
</html>

Keywords

PHP form submission data updating database query SQL injection

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