Code-Snippets-Functions/Execute a function on a child site/WooCommerce/display-product-in-cart-if-product-already-in-cart.txt

add_filter( 'woocommerce_product_single_add_to_cart_text', 'woo_custom_cart_button_text' );
function woo_custom_cart_button_text() {
	global $woocommerce;
	foreach($woocommerce->cart->get_cart() as $cart_item_key => $values ) {
		$_product = $values['data'];
 
		if( get_the_ID() == $_product->id ) {
			return __('Already in cart - Add Again?', 'woocommerce');
		}
	}
	return __('Add to cart', 'woocommerce');
}
 
add_filter( 'add_to_cart_text', 'woo_archive_custom_cart_button_text' );
function woo_archive_custom_cart_button_text() {
	global $woocommerce;
	foreach($woocommerce->cart->get_cart() as $cart_item_key => $values ) {
		$_product = $values['data'];
		if( get_the_ID() == $_product->id ) {
			return __('Already in cart', 'woocommerce');
		}
	}
	return __('Add to cart', 'woocommerce');
}