title: how to send a facebook game request in php
body: <p>OK i know there is tons of documentation out there for using a request form and that is not my question.</p>
  
  <p>I am writing a similar app like many other game apps that need to send "game requests", but i scoured through the documentation only to find that I am bound to using these two ways:</p>
  
  <ol>
  <li>Wall post (dont want to use this since I cannot use privacy settings on messages on friend's wall)</li>
  <li>fb:request-form</li>
  </ol>
  
  <p>the request form would suffice if I can somehow pre-populate the friend ids and automatically send it out, but I dont know how to do that. Can anyone help?</p>
  
  <p>But how does Farmville and others do this? They send requests of type "game requests". </p>
  
  <p>Gotta get me some information - help!!</p>