OpenID sample Code, please expert guys share 
code below:
<?php
// Below is a very simple PHP 5 script that implements the RPX token URL processing.
// The code below assumes you have the CURL HTTP fetching library.
$rpxApiKey = 'REPLACE_WITH_YOUR_RPX_API_KEY';
if(isset($_POST['token'])) {
/* STEP 1: Extract token POST parameter */
$token = $_POST['token'];
/* STEP 2: Use the token to make the auth_info API call */
$post_data = array('token' => $_POST['token'],
'apiKey' => $rpxApiKey,
'format' => 'json');
$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_URL, 'https://rpxnow.com/api/v2/auth_info');
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
$raw_js alt= curl_exec($curl);
curl_close($curl);
/* STEP 3: Parse the JSON auth_info response */
$auth_info = json_decode($raw_json, true);
if ($auth_info['stat'] == 'ok') {
/* STEP 3 Continued: Extract the 'identifier' from the response */
$profile = $auth_info['profile'];
$identifier = $profile['identifier'];
if (isset($profile['photo'])) {
$photo_url = $profile['photo'];
}
if (isset($profile['displayName'])) {
$name = $profile['displayName'];
}
if (isset($profile['email'])) {
$email = $profile['email'];
}
/* STEP 4: Use the identifier as the unique key to sign the user into your system.
This will depend on your website implementation, and you should add your own
code here.
*/
any body knows what code should we put here for D7?
/* an error occurred */
} else {
// gracefully handle the error. Hook this into your native error handling system.
echo 'An error occured: ' . $auth_info['err']['msg'];
}
}
?>
/* END */
Thanks in advance
