Filter parameters to the ReturnURL when checking out with PayPal Express. Returns an array of key, value pairs: { return array("option" => "1"); }.

apply_filters( 'pmpro_paypal_express_return_url_parameters', array() );

Parameters

parameters

An array of key, value pairs;

Source

File: https://github.com/strangerstudios/paid-memberships-pro/blob/master/classes/gateways/class.pmprogateway_paypalexpress.php

File: https://github.com/strangerstudios/paid-memberships-pro/blob/master/classes/gateways/class.pmprogateway_paypalstandard.php