title: Verify/change application region at Google App Engine
body: <p>I'm creating a GAE application.</p>
  
  <p>When I set my GAE PHP application as an authorized application to access my
  Cloud SQL instance, I get the following warning:</p>
  
  <blockquote>
    <p>App Engine regions must be the same as Cloud SQL instance regions!</p>
  </blockquote>
  
  <p>How can I verify or change the region of my GAE application?</p>
  
  <p>Thx</p>