What is the purpose of using session variables in PHP when submitting forms?

Session variables in PHP are used to store user data across multiple pages or requests. When submitting forms, session variables can be used to retain user input data even if the page is refreshed or if there are validation errors. This helps improve user experience by preventing data loss and allowing users to easily correct any errors without having to re-enter all the information. 

<?php
session_start();

// Store form data in session variables
$_SESSION['name'] = $_POST['name'];
$_SESSION['email'] = $_POST['email'];

// Redirect to another page after form submission
header('Location: another_page.php');
exit;
?>

Keywords

session variables PHP forms data persistence security

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