I recently work with google adwords api to get report using php. Since I am not familiar with this, I have no idea how to create test accounts. Does anybody help?
You can create and test your application using the Sandbox AdWords API. The sandbox allows you to create against a test account without changing your data or charging an API fee. http://code.google.com/apis/adwords/docs/sandbox.html
I found this article very useful: http://www.ewanheming.com/2011/12/ppc-software-development/adwords-api/using-the-adwords-api-sandbox