fix php test using getter (#7525)

Author: wing328

samples/client/petstore/php/OpenAPIClient-php/tests/PetApiTest.php

@@ -114,21 +114,21 @@ public function testGetPetByIdWithHttpInfo()
         $this->assertSame($status_code, 200);
         $this->assertSame($response_headers['Content-Type'], ['application/json']);
     }
-/* comment out due to https://github.com/OpenAPITools/openapi-generator/pull/7376#issuecomment-699722244
+
     public function testFindPetByStatus()
     {
         $response = $this->api->findPetsByStatus('available');
         $this->assertGreaterThan(0, count($response)); // at least one object returned
 
         $this->assertSame(get_class($response[0]), Pet::class); // verify the object is Pet
         foreach ($response as $pet) {
-            $this->assertSame($pet['status'], 'available');
+            $this->assertSame($pet->getStatus(), 'available');
         }
 
         $response = $this->api->findPetsByStatus('unknown_and_incorrect_status');
         $this->assertCount(0, $response);
     }
- */
+
     public function testUpdatePet()
     {
         $petId = 10001;