First of all, the simple piece of code below shows how I ask you for trust on my sites:

      $browser = $HTTP_SERVER_VARS['HTTP_USER_AGENT'];
      $ingame = (substr($browser,0,16)=='EVE-minibrowser/');
      
      function get_trust() {
        global $ingame, $trusted, $pilotname;
        if ($ingame) {
         // check for trust  

           if ($_SERVER['HTTP_EVE_TRUSTED']=='no') {
            // request trust from client through headers
              header("eve.trustme:".$this_host."/::please allow me to access your pilot information.");
              $trusted = false;
           } else {
              $trusted = true;
            // get pilotname

              $pilotname = $_SERVER['HTTP_EVE_CHARNAME'];
           }
        }
      }
    

The following variables are available in from the header in the IGB:

• TRUSTED
  Whether or not the user of the client has trusted your website. ('no'/'yes')
• REGIONNAME
  The name of the region the pilot is currently in.
• CONSTELLATIONNAME
  The name of the constellation the pilot is currently in.
• SOLARSYSTEMNAME
  The name of the solarsystem the pilot is currently in.
• STATIONNAME
  The name of the station the pilot is currently docked at. ('None' if undocked)
• CHARNAME
  The name of the pilot.
• CHARID
  The database id of the pilot, can be used to create showinfo links or get the pilot's portrait.
• ALLIANCENAME
  The name of the alliance the pilot is part of. ('None' if not part of an alliance)
• ALLIANCEID
  The database id of the alliance the pilot is part of. (0 (unsure) if not part of an alliance)
• CORPNAME
  The name of the corp the pilot is part of.
• CORPID
  The database id of the corp the pilot is part of.
• CORPROLE
  The role of the pilot in his corporation.

The corporation role is a bitmask. If you don't know what that is, ask Google, it goes beyond the scope of this article to explain basic programmer's math here.

Hope this helps, if you have anything to add or know of errors in this text, please contact Grismar.