Woocommerce check if coupon is valid or been used

Question

how can i check is the coupon is valid or been used? I have a this code:

if (is_page('checkout')){ //check coupon insert first is valid or no }

Answer 1

You can use 2 methods on WC_cart object regarding applied coupons:

$applied_coupons = WC()->cart->get_applied_coupons();

Return an array of applied coupons codes

And:

if( WC()->cart->has_discount( 'your_coupon_code' ) && is_checkout() ) {
    // do something
}

Returns whether or not a discount has been applied (boolean).

Note: The correct conditionals in woocommerce for targeting cart or checkout pages are is_checkout() for checkout page and is_cart() for cart page.

References:

• WooCommerce Class WC_Cart - Methods
• WooCommerce Conditional tags