GET2bitly

gistfile1.php

<?

$login = 'yourlogin';
$apikey = 'yourapikey';

$url = $_GET['URL4BITLY'];

/* make a URL small */
function make_bitly_url($url,$login,$appkey,$format = 'xml',$version = '2.0.1')
{
        //create the URL
        $bitly = 'http://api.bit.ly/shorten?version='.$version.'&longUrl='.urlencode($url).'&login='.$login.'&apiKey='.$appkey.'&format='.$format;

        //get the url
        //could also use cURL here
        $response = file_get_contents($bitly);

        //parse depending on desired format
        if(strtolower($format) == 'json')
        {
                $json = @json_decode($response,true);
                return $json['results'][$url]['shortUrl'];
        }
        else //xml
        {
                $xml = simplexml_load_string($response);
                return 'http://bit.ly/'.$xml->results->nodeKeyVal->hash;
        }
}

/* usage */
$short = make_bitly_url($url,$login,$apikey,'json');
echo $short;