Need some help with OpenID

This is an Steam Authentication Methord but its giving me some Notices so can someone help me to resolve this

PHP:

<?php

$steam_login_verify =SteamSignIn::validate();if(!empty($steam_login_verify)){

echo "success + $steam_login_verify";}else{

$steam_sign_in_url =SteamSignIn::genUrl();

echo ‘<a href=\"$steam_sign_in_url\"><img src="http://cdn.steamcommunity.com/public/images/signinthroughsteam/sits_large_noborder.png"/></a>’;}/**

*

* @package Steam Community API

*…

Need some help with OpenID

See original post by Seupoj