How does PHP handle session data storage on the server and client side?

PHP handles session data storage on the server side by storing session files in a designated directory on the server. On the client side, PHP uses cookies to store a session ID, which is used to retrieve the corresponding session data on the server. To ensure secure session data storage, it's important to configure PHP session settings properly and use HTTPS to encrypt data transmission between the client and server. 

// Start the session
session_start();

// Set session save path to a secure directory
session_save_path('/path/to/secure/directory');

// Set session cookie parameters for secure transmission
session_set_cookie_params([
    'secure' => true,
    'httponly' => true,
    'samesite' => 'Strict'
]);

Keywords

PHP session data storage server side client side

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