woocommerce_get_checkout_url │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_get_checkout_url', 'wp_kama_woocommerce_get_checkout_url_filter' );

/**
 * Function for `woocommerce_get_checkout_url` filter-hook.
 * 
 * @param  $checkout_url 
 *
 * @return 
 */
function wp_kama_woocommerce_get_checkout_url_filter( $checkout_url ){

	// filter...
	return $checkout_url;
}

$checkout_url

-

Where the hook is called

return apply_filters( 'woocommerce_get_checkout_url', $checkout_url );

Where the hook is used in WooCommerce