Session variable disappears after callback to WooCommerce gateway API link

I am trying to create a plugin for WooCommerce that stores some value into $_SESSION[‘myVar’] before payment process and get it on Thank You Page back. Everything works fine, but when I use a gateway, that makes a callback with POST info about payment to https://exemple.com/wc-api/my_gateway the $_SESSION[‘myVar’] becomes empty and I can’t get value from it on the Thank You Page.

How I did it:

// Reg. the session   
add_action( 'init', __CLASS__ . '::register_session' );

public static function register_session() {

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

}

// Set the session variable before payment
$_SESSION['myVar'] = 'my value';

// Trying to get the session value after payment
echo $_SESSION['myVar']; // NULL

The process is simple: user clicks Pay button, it redirects him to a bank url + sends order info to the bank. The bank process the payment and redirects the user to special API page exemple.com/wc-api/my_gateway + sends POST data array about payment there. I don’t understand why while this the session variable is being deleted.

Thank you!

• This topic was modified 3 years, 12 months ago by kiberchaka.
• This topic was modified 3 years, 12 months ago by kiberchaka.
• This topic was modified 3 years, 12 months ago by kiberchaka.
• This topic was modified 3 years, 12 months ago by kiberchaka.
• This topic was modified 3 years, 12 months ago by kiberchaka.