What are the advantages and disadvantages of using sessions in PHP for website security?

Using sessions in PHP for website security can help prevent unauthorized access to sensitive information by storing user data on the server-side. This can help protect against attacks such as session hijacking and session fixation. However, sessions can also introduce vulnerabilities if not implemented properly, such as session fixation attacks or session data tampering. 

// Start a session
session_start();

// Store user data in the session
$_SESSION['user_id'] = 123;

// Retrieve user data from the session
$user_id = $_SESSION['user_id'];

// Destroy the session when the user logs out
session_destroy();

Keywords

sessions PHP website security advantages disadvantages

Related Questions