function get_short_link($url) 
{
  $bitly_login="yourloginname";
  $bitly_apikey="yourapikey";
  $api_call = file_get_contents("http://api.bit.ly/shorten?version=2.0.1&longUrl=".$url."&login=".$bitly_login."&apiKey=".$bitly_apikey);
  $bitlyinfo=json_decode(utf8_encode($api_call),true);
  if ($bitlyinfo['errorCode']==0) 
  {
      return $bitlyinfo['results'][urldecode($url)]['shortUrl'];
  } 
  else
  {
      return false;
  }
}
 
//Usage: get_short_link("http://snipt.net");