Replace ‘out of stock’ message by ‘sold’

Replace the message that shows when an item is out of stock to instead mark the product as sold.

		/**
 * Replace out of stock message by sold
 */

add_filter('woocommerce_get_availability', 'cc_change_availability_to_sold');

function cc_change_availability_to_sold($availability) {

  $availability['availability'] = str_ireplace('Out of stock', 'Sold', $availability['availability']);
  return $availability;

}