How can PHP sessions be effectively utilized to maintain data consistency in a single document scenario?

When working with a single document scenario in PHP, sessions can be effectively utilized to maintain data consistency by storing and retrieving data across multiple requests. By storing relevant data in session variables, you can ensure that the data remains accessible and consistent throughout the user's interaction with the document. 

<?php
session_start();

// Store data in session variable
$_SESSION['user_name'] = 'John Doe';

// Retrieve data from session variable
$user_name = $_SESSION['user_name'];

echo 'Welcome, ' . $user_name;
?>

Keywords

PHP sessions data consistency single document utilization maintain

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