Run tests at level 10

Author: n7studios

phpstan.neon.dist

@@ -6,4 +6,4 @@ parameters:
 
     # Should not need to edit anything below here
     # Rule Level: https://phpstan.org/user-guide/rule-levels
-    level: 9
+    level: 10

src/ConvertKit_API_Traits.php

@@ -867,10 +867,22 @@ public function get_subscriber_id(string $email_address)
             return false;
         }
 
+        if (!is_array($subscribers->subscribers)) {
+            return false;
+        }
+
         if (!count($subscribers->subscribers)) {
             return false;
         }
 
+        if (!$subscribers->subscribers[0] instanceof \stdClass) {
+            return false;
+        }
+
+        if (!is_int($subscribers->subscribers[0]->id)) {
+            return false;
+        }
+
         // Return the subscriber's ID.
         return $subscribers->subscribers[0]->id;
     }