true ) ); } } //sets up activation hook register_activation_hook(__FILE__, 'admcw_woocommerce_addon_activate'); add_action( 'woocommerce_admin_order_data_after_billing_address', 'admcw_after_billing_address', 10, 3 ); function admcw_after_billing_address( $order ){ $phone = $order->billing_phone; if (!$phone) # Return if there is no billing phone return; # If Billing country is Israel then need to take care of country code if ($order->billing_country == "IL"){ $pattern = '/^05/i'; $replacement = '+9725'; $phone = preg_replace($pattern, $replacement, $phone); } echo '

WHATSAPP: '.$phone.'

'; }