What are the advantages and disadvantages of using hidden fields, sessions, or cookies to pass form data in PHP?

When passing form data in PHP, hidden fields, sessions, and cookies are commonly used methods. Hidden fields are simple to implement but can be manipulated by users. Sessions are secure and can hold larger amounts of data, but require server-side storage. Cookies are versatile and can persist data across sessions, but can be disabled by users. 

// Using sessions to pass form data
session_start();
$_SESSION['form_data'] = $_POST;

// Retrieving form data from session
$form_data = $_SESSION['form_data'];

// Clearing form data from session after use
unset($_SESSION['form_data']);

Keywords

hidden fields sessions cookies form data PHP

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