What’s the difference between WC() and $woocommerce
wc(); returns the singleton instance of WooCommerce to prevent the need to use globals. WC sets the $woocommerce global this way: $GLOBALS[‘woocommerce’] = wc();, so using one or the other seems the same… EDIT About your errors, you got them because $woocommerce->session has not been set. WC initializes WC_Session_Handler only on frontend or CRON requests. … Read more