Support for PHP8

Dear Tickera team,

we are now running our WordPress instance on PHP8 and everything went well so far. However, we ecountered a minor hiccup with the bridge-for-woocommerce addon.

The error we received was:

[20-Apr-2021 22:13:18 UTC] PHP Fatal error: Uncaught TypeError: method_exists(): Argument #1 ($object_or_class) must be of type object|string, int given in /var/srv/www.example.org/www/wp-content/plugins/bridge-for-woocommerce/bridge-for-woocommerce.php:1602

Hereby, we are submitting a patch you might want to integrate.

# diff -u /var/srv/www.example.org/www/wp-content/plugins/bridge-for-woocommerce/bridge-for-woocommerce.php.dist /var/srv/www.example.org/www/wp-content/plugins/bridge-for-woocommerce/bridge-for-woocommerce.php
--- /var/srv/www.example.org/www/wp-content/plugins/bridge-for-woocommerce/bridge-for-woocommerce.php.dist	2021-04-21 11:06:12.680436457 +0200
+++ /var/srv/www.example.org/www/wp-content/plugins/bridge-for-woocommerce/bridge-for-woocommerce.php	2021-04-21 11:08:17.760759130 +0200
@@ -1772,7 +1772,7 @@
         {
             $has_ticket = false;

-            if ( method_exists( $order, 'get_items' ) ) {
+            if ( (is_object($order) || is_string($order)) && method_exists( $order, 'get_items' ) ) {
                 $items = $order->get_items();
                 if ( empty($items) ) {
                     $items = ( is_cart() || is_checkout() ? WC()->cart->get_cart() : array() );
@@ -4066,4 +4066,4 @@

 }

We hope this helps.

With kind regards,
Andreas.