This filter changes the URL to redirect to on confirmation. By default, this redirects to the PMPro Confirmation page with pmpro_url("confirmation", "?level=" . $pmpro_level->id). It also passes the user ID of the current user and the level object.

apply_filters( "pmpro_confirmation_url", string $rurl, int $user_id, object $pmpro_level );

Parameters

$rurl

string

$user_id

int;

$pmpro_level

object;

Source

File: https://github.com/strangerstudios/paid-memberships-pro/blob/master/preheaders/checkout.php