What is the recommended method for checking if a user is logged in using PHP sessions?

To check if a user is logged in using PHP sessions, you can verify if a specific session variable is set. Typically, when a user logs in, you would set a session variable to indicate their authentication status. To check if the user is logged in, you can simply check if this session variable is set. 

session_start();

if(isset($_SESSION['logged_in']) && $_SESSION['logged_in'] === true){
    // User is logged in
    echo 'User is logged in.';
} else {
    // User is not logged in
    echo 'User is not logged in.';
}

Keywords

PHP sessions authentication logged in check

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