title: Google App Engine PHP SDK - How to install on Ubuntu (15.10)?
body: <p>Google official documentation is available here:<br>
  <a href="https://cloud.google.com/appengine/downloads#Google_App_Engine_SDK_for_PHP" rel="nofollow">https://cloud.google.com/appengine/downloads#Google_App_Engine_SDK_for_PHP</a>  </p>
  
  <p>But it doesn't provide sufficient information about the following step:<br>
  <em>"4 - Build and install the PHP interpreter and App Engine PHP extension. Specify the path to php-cgi and gae_runtime_module.so when running the development server."</em></p>
  
  <p>I'm using a new Virtualbox machine with Ubuntu 15.10 and PhpStorm to test GAE.</p>
  
  <p>Could someone please provide clear instructions about step 4? What do I need to do to install the php interpreter and the App Engine php extension?</p>
  
  <p>P.s. I've already searched with google but I only found old/confusing tutorials</p>