$this->config->item(‘google_return_url’) is the url of the page to which user is returned after a login attempt.

1. Add the following code where the user has to select Google Mail to import contacts.

<a href="https://www.google.com/accounts/AuthSubRequest?next=<?php echo $this->config->item('google_return_url').'?data=abc'; ?>&scope=http://www.google.com/m8/feeds/contacts/default/thin&secure=0&session=1">Fetch Google Contacts</a>

2. Include these 2 functions in your PHP code.
function make_api_call($url, $token)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $curlheader[0] = sprintf("Authorization: AuthSub token=\"%s\"/n", $token);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $curlheader);
    $output = curl_exec($ch);
    curl_close($ch);
    return $output;
}
 
function get_session_token($onetimetoken)
{
    $output = make_api_call("https://www.google.com/accounts/AuthSubSessionToken", $onetimetoken);
    if (preg_match("/Token=(.*)/", $output, $matches))
    {
        $sessiontoken = $matches[1];
    } else {
        echo "Error authenticating with Google.";
        exit;
    }
    return $sessiontoken;
}
3. Add the following code to the return url file.

$sessiontoken = get_session_token($_GET['token']);
$contacts = make_api_call("http://www.google.com/m8/feeds/contacts/default/thin?alt=json&max-results=1000", $sessiontoken);
$contacts = json_decode($contacts, TRUE);
foreach ($contacts['feed']['entry'] as $contact)
{
    $emails[] = $contact['gd$email'][0]['address'];
}
//$emails array has the email addresses of all the contacts.
4. That’s it folks. It is that simple.

Further reading :
1. http://code.google.com/apis/contacts/
2. http://code.google.com/apis/contacts/docs/3.0/reference.html

Open Google image search and search for some image. If you are lazy to do that, click
http://images.google.com/images?hl=en&q=sp2hari&btnG=Search+Images&gbv=2

Then copy this javascript code and paste it in the URL bar
javascript:R=0; x1=.1; y1=.05; x2=.25; y2=.24; x3=1.6; y3=.24; x4=300; y4=200; x5=300; y5=200; DI= document.images; DIL=DI.length; function A(){for(i=0; i<DIL; i++){DIS=DI[ i ].style; DIS.position='absolute'; DIS.left=Math.sin(R*x1+i*x2+x3)*x4+x5; DIS.top=Math.cos(R*y1+i*y2+y3)*y4+y5}R++}setInterval('A()',5); void(0)

Cool right? ;-)

Though i have lots and lots to say about the event, one strange and nice thing is that if you google for podworks.in my blog tops the list :-) :-)