How does PHP handle session IDs and cookies automatically?

PHP handles session IDs and cookies automatically by generating a unique session ID for each user and storing it in a cookie on the user's browser. This allows PHP to identify the user and maintain their session data across multiple page requests. To ensure that session IDs are secure and not easily tampered with, PHP automatically handles the encryption and validation of session IDs. 

<?php
session_start(); // start the session

// PHP automatically handles setting a unique session ID in a cookie
// and encrypting/validating the session ID for security
?>

Keywords

PHP session IDs cookies handling automatic

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