title: C2DM implementation PHP code
body: <p>I am creating the Android application where C2DM push notification is used. But i have a problem in creating the php code to use c2dm for sending messages. please guide me how to use the php code to send the messages. Actually there is a problem regarding this that how to get client auth token. I have seen the <a href="http://code.google.com/android/c2dm/index.html#server">http://code.google.com/android/c2dm/index.html#server</a> url but according to this i have created the android application and i got the registration id also and i also send to the user but how server uses this to send the application.</p>
  
  <p>is there anything needed for the server from the android device to send the messages?.</p>