What is the best practice for passing session variables through hyperlinks in PHP?

When passing session variables through hyperlinks in PHP, it is best practice to use the session_id() function to get the current session ID and append it to the URL as a query parameter. This ensures that the session variables are maintained and accessible on the next page. 

<?php
session_start();

// Get the current session ID
$session_id = session_id();

// Append session ID to the URL as a query parameter
echo '<a href="next_page.php?PHPSESSID=' . $session_id . '">Next Page</a>';
?>

Keywords

session variables hyperlinks passing data PHP security

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