Using Google authentication API with PHP

Question

Instead of printing the userinfo, the following code is printing the details of the access token granted by Google. The code is very simple yet I am not able to figure out the exact cause of this

    <?php
$url = 'https://accounts.google.com/o/oauth2/token';
$fields = array(
        'code'=>urlencode($_GET['code']),
        'client_id'=>urlencode('###########.apps.googleusercontent.com'),
        'client_secret'=>urlencode('###########'),
        'redirect_uri'=>urlencode('http://######odie.co.in/googlogin'),
        'grant_type'=>urlencode('authorization_code'),
                    );


foreach($fields as $key=>$value) {
     $fields_string .= $key.'='.$value.'&';
     }
rtrim($fields_string,'&');

//open connection
$ch = curl_init();

//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POST,count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);

//execute post
$result = curl_exec($ch);


//close connection
curl_close($ch);
$data =  json_decode($result);

print_r(file_get_contents(' https://www.googleapis.com/oauth2/v1/userinfo?access_token='.$data['access_token']));
?>

musefan · Accepted Answer · 2012-02-03 08:59:45Z

2

You need to add CURLOPT_RETURNTRANSFER, true to your curl_setopt.

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

edited Feb 3, 2012 at 8:59

musefan

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answered Feb 3, 2012 at 7:54

richoffrails

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Comments

Dino Babu · Accepted Answer · 2013-02-27 10:34:18Z

1

refer this. its very simple.

Simple PHP Library for Google Authentication API

answered Feb 27, 2013 at 10:34

Dino Babu

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