Here's a PHP 5 Swagger client for the Petstore sample application. See the interactive Swagger documentation at http://petstore.swagger.wordnik.com/ for more information on this demonstration API.

The client contained in petstore was generated using this swagger-codegen project, with the following command:

./bin/runscala.sh com.wordnik.swagger.codegen.BasicPHPGenerator http://petstore.swagger.wordnik.com/api/resources.json special-key

To run the tests, you will need PHPUnit installed on your system. With the phpunit command in your path, run the tests for each resource as follows:

phpunit tests/PetApiTest.php
phpunit tests/StoreApiTest.php
phpunit tests/UserApiTest.php