Code-Snippets-Functions/Execute a function on a child site/WooCommerce/change-subscription-variable-product-price-string.txt

add_filter( 'woocommerce_subscriptions_product_price_string', 'custom_variable_subscription_price_string', 10, 2 );
function custom_variable_subscription_price_string( $price_string, $product ) {
    if ( ! is_a( $product, 'WC_Product' ) ) {
        return $price_string;
    }

    if ( $product->is_type( 'variation' ) || $product->is_type( 'subscription_variation' ) ) {
        $subscription_length = method_exists( $product, 'get_subscription_length' ) ? $product->get_subscription_length() : 0;
        $subscription_period = method_exists( $product, 'get_subscription_period' ) ? $product->get_subscription_period() : '';

        if ( $subscription_length && $subscription_period ) {
            if ( intval( $subscription_length ) === 1 && strtolower( $subscription_period ) === 'month' ) {
                $price_string = 'Pay in Full';
            }
        }
    }

    return $price_string;
}