Check if ANY coupon code is applied in woocommerce
If you want to check for a specific coupon, @Reigel's answer is the solution. However to check if ANY coupon has been applied the following code will get the job done.
if( WC()->cart->get_coupons() ) echo "Coupon applied";
You can use has_discount() function of the cart.. this needs the coupon code as argument.
Use it like this:
if (WC()->cart->has_discount('test1')) { // cart has coupon test1 applied}as suggested by @Anand, you can use WC()->cart->get_coupons(). This will return all the coupons if there are any in the cart.
However, as I've check woocommerce plugin source code, get_coupons() is using WP_Query.It's really not a big deal if there's no other better way.
Here's a better way. We can access a public variable of the cart applied_coupons. It contains an array of coupon codes applied to the cart. We can use it like this...
$has_coupons = count(WC()->cart->applied_coupons)>0?true:false;if($has_coupons) { // cart has coupons}