What are some common mistakes to avoid when working with session variables in PHP?

One common mistake to avoid when working with session variables in PHP is not checking if the session has already started before trying to access or modify session variables. This can lead to errors or unexpected behavior in your code. To solve this issue, always start the session at the beginning of your script using session_start(). 

// Start the session
session_start();

// Access or modify session variables safely
$_SESSION['username'] = 'example';

Keywords

session variables PHP security unset expiration

Related Questions