why QuickBooks.php is blank?

I have downloaded the QuickBooks php framework from https://idnforums.intuit.com/messageview.aspx?catid=56&threadid=9164&enterthrea开发者_如何学运维d=y. I have configured the database. But for some reason when I visit the QuickBooks.php the page is blank. Its not even generating any error.

You're not supposed to visit the QuickBooks.php file in a browser.

Read the documentation in the docs/ folder (look for example_server.php or example_web_connector.php) and follow the QuickBooks PHP DevKit Quick-start Guide