The fullstripe_shipping_countries Wordpress filter

fullstripe_shipping_countries_v6-1.php

<?php
/**
 * A 'fullstripe_shipping_countries' filter hook example for WP Full Stripe.
 *
 * @param string $countryCodes Array of 2-letter ISO country codes returned by previous filters of the chain.
 * @param array $params with the following keys:
 *   formName               => Name of the form that requires the list of shipping countries. 
 *   formType               => Type of the form that requires the list of shipping countries. Possible values:
 *                             inline_payment
 *                             checkout_payment
 *                             inline_subscription
 *                             checkout_subscription
 *                             inline_donation
 *                             checkout_donation
 *                             inline_save_card
 *                             checkout_save_card
 *
 * @return string Filtered array of 2-letter ISO country codes
 */
function getShippingCountries( $countryCodes, $params) {
    $result = $countryCodes;
    
    // Set Italy, United States, and Hungary as the shipping countries if the name of the form is 'paymentInlineDefault'
    // For every other form, display all countries
    if ( $params['formName'] === 'paymentInlineDefault' ) {
        $result = [ 'IT', 'US', 'HU' ]; 
    }

    return $result;
}

add_filter('fullstripe_shipping_countries', 'getShippingCountries', 10, 2 );