WooCommerce Clear Cart via URL

gistfile1.php

// check for clear-cart get param to clear the cart, append ?clear-cart to any site url to trigger this
add_action( 'init', 'woocommerce_clear_cart_url' );
function woocommerce_clear_cart_url() {
	if ( isset( $_GET['clear-cart'] ) ) {
		global $woocommerce;
		$woocommerce->cart->empty_cart();
	}
}

Thank, @bfintal ! It's still working with Woocommerce 4.3.0 😃

2018 way:

add_action( 'woocommerce_before_cart', 'woocommerce_clear_cart_url' );
function woocommerce_clear_cart_url() {
	if ( isset( $_GET['clear-cart'] ) ) {
		WC()->cart->empty_cart();
	}
}

Doesn't seem to work now.. For me just doesn't do anything - adding /?clear-cart to the domain just leads to the main page.
/?add-to-cart=... works though

Is the only thing that should be done is adding the code to functions.php?
Any other things should be done before it starts to work?

For me, I combined @kloon & @alexx855's solution to trigger on the add-to-cart url:

add_action( 'init', 'woocommerce_clear_cart_url' );
function woocommerce_clear_cart_url() {
	if ( isset( $_GET['add-to-cart'] ) ) {
		WC()->cart->empty_cart();
	}
}

This one works for me though..
I don't see much difference, but the previous didn't work with /?clear-cart in the url
And this one works perfectly.
Thank you, @bfintal

Can the script be changed so that it would be possible to use clear-cart separately or together with add-to-cart?
something like

https://mysite.com/checkout/?clear-cart&add-to-cart=1234,1235

?

Can we do a redirection after clicking the clear cart url? Like if the url is inside the cart page, how can we reload it as cart empty page after clicking the url?

Can we do a redirection after clicking the clear cart url? Like if the url is inside the cart page, how can we reload it as cart empty page after clicking the url?

Finally figured this part out. So the woocommerce_before_cart hook will work for the Woocommerce empty_cart function, but it won't do any page reload.
If page reloading is needed, the function has to be hooked with the init hook, or better with wp_loaded hook IMO.

Credits: How To Add an Empty Cart Button to WooCommerce

Credits: How To Add an Empty Cart Button to WooCommerce

Works, but missing exit after wp_safe_redirect().

Credits: How To Add an Empty Cart Button to WooCommerce

Works, but missing exit after wp_safe_redirect().

Adding exit did the trick

These all stopped working. I can't clear my cart with any of them.