Code-Snippets-Functions/Execute a function on a child site/WooCommerce/change-add-to-cart-text-everywhere.txt

// Change button text on single product page
add_filter( 'woocommerce_product_single_add_to_cart_text', 'custom_add_cart_button_single_product', 9998 );
function custom_add_cart_button_single_product( $label ) {
    if ( isset( $_SESSION['product_in_cart'] ) && $_SESSION['product_in_cart'] ) {
        $label = 'Go To Cart';
    }
    return $label;
}

// Change button text on shop pages
add_filter( 'woocommerce_product_add_to_cart_text', 'custom_add_cart_button_shop_page', 9998 );
add_filter( 'woocommerce_product_archive_add_to_cart_text', 'custom_add_cart_button_shop_page', 9998 );
function custom_add_cart_button_shop_page( $label ) {
    if ( isset( $_SESSION['product_in_cart'] ) && $_SESSION['product_in_cart'] ) {
        $label = 'Go To Cart';
    }
    return $label;
}

// Set session variable when product is added to cart
add_action( 'woocommerce_add_to_cart', 'set_product_in_cart_session_variable', 10, 6 );
function set_product_in_cart_session_variable( $cart_item_key, $product_id, $quantity, $variation_id, $variation, $cart_item_data ) {
    $_SESSION['product_in_cart'] = true;
}