function adflyShortenURL($url, $uid, $key){
    $apiURL = 'http://api.adf.ly/api.php?';
	 
    // api queries
    $query = array(
        'key' => $key,
        'uid' => $uid,
        'advert_type' => 'int',
        'domain' => 'adf.ly'
    );
	 
    // full api url with query string
    $apiURL = $apiURL . http_build_query($query).'&url='.$url;
	 
    // get data
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $apiURL);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false );
	 
    $data = curl_exec($ch);
    curl_close($ch);
    return $data;
	 
}

$uid = "11784699";
    $key = "7c096173f1775f61d461df24d1e76f63";
    $url = 'http://www.stepblogging.com';
    $return = adflyShortenURL($url, $uid, $key);
 
    //OUTPUT: http://adf.ly/1RlYlU