In PHP, why are my session variables persisted as references?

Question

Here\'s the code. It\'s a simple operation to check that a session ID isn\'t being spoofed by verifying the IP address:

session_start();
$session_ip_address = $_         


        

Answer 1

it does assign by value, the reference & next to $_SESSION has nothing to do with your expression $_SESSION['x'] = $x;