GiveWP filter gateway visibility

givewp-filter-gateways-visibility.php

<?php

function filter_give_enabled_payment_gateways($gateways, $formId){
   if (!current_user_can('manage_options')) {
        return array_filter($gateways, function($gateway){
            return $gateway !== 'gatewayId';
        }, ARRAY_FILTER_USE_KEY);
    }

    return $gateways;
}

// v2 forms
add_filter('give_enabled_payment_gateways', 'filter_give_enabled_payment_gateways', 10, 2);
// v3 forms
add_filter('givewp_donation_form_enabled_gateways', 'filter_give_enabled_payment_gateways', 10, 2);