wordpress store in session code example

Example 1: create session in wordpress

/* create session in wordpress and php by [email protected] */
if (!session_id()) {
    session_start();
}

  if ( isset( $_POST['wp-submit'] ) ){

    $_SESSION['username']=$_POST['log'];

  }

Example 2: store a variable in session and echo that variable on a page wordpress

function register_my_session(){
    if( ! session_id() ) {
        session_start();
    }
}

add_action('init', 'register_my_session');