How can one ensure that values are properly passed between pages in PHP forms?

To ensure that values are properly passed between pages in PHP forms, you can use the $_POST or $_GET superglobals to retrieve form data submitted by the user and then pass this data to the next page using hidden input fields or session variables. This ensures that the values are securely transferred between pages. 

// Page 1 - form submission
<form action="page2.php" method="post">
    <input type="text" name="username">
    <input type="hidden" name="hidden_field" value="some_value">
    <button type="submit">Submit</button>
</form>

// Page 2 - receiving form data
<?php
session_start();
$username = $_POST['username'];
$hiddenValue = $_POST['hidden_field'];

// store values in session variables
$_SESSION['username'] = $username;
$_SESSION['hidden_field'] = $hiddenValue;

// redirect to another page
header('Location: page3.php');
?>

Keywords

POST method GET method session variables form submission form handling

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