title: How to send Chat Invitation, to GTalk using PHP?
body: <p>I want to send Chat Invitation to multiple users of Gmail, from my database list. How can it be done using PHP?
  example: My data table contains some list of email address(i.e abc@gmail.com, def@gmail.com....), and i want to send all these email address an invitation from my end(i.e me@gmail.com or me@jabber.com)</p>