Get user basic information using facebook Login button plugin?

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Here I am using Facebook Login button plugin and javascript sdk

I am able to successfully login and logout by using above.

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4条回答

你的背包

2020-12-14 12:03

It's also possible to use a combination of PHP SDK and JS SDK, with the latter performing the login and the former storing data on the server. Something like:

<?php
require_once 'config.php';
require_once 'lib/facebook.php';

$facebook = new Facebook(array(
    'appId' => FB_APP_ID,
    'secret' => FB_APP_SECRET,
));


?>
<!DOCTYPE html>
<html xmlns:fb="http://www.facebook.com/2008/fbml">
<body>

<div id="fb-root"></div>
<script>
    window.fbAsyncInit = function () {
        FB.init({
            appId:'<?php echo $facebook->getAppID() ?>',
            cookie:true,
            xfbml:true,
            oauth:true
        });
        FB.Event.subscribe('auth.login', function (response) {
            window.location = "showUser.php"; //redirect to showUser.php on Login
        });
        FB.Event.subscribe('auth.logout', function (response) {
            window.location.reload();
        });
    };
    (function () {
        var e = document.createElement('script');
        e.async = true;
        e.src = document.location.protocol +
            '//connect.facebook.net/en_US/all.js';
        document.getElementById('fb-root').appendChild(e);
    }());
</script>
<div class="fb-login-button" data-show-faces="true" data-width="200"
     data-max-rows="1"></div>
</body>
</html>

And in showUser.php you have something like:

<?php
#showUser.php
require_once 'config.php';
require_once 'lib/facebook.php';

$facebook = new Facebook(array(
    'appId' => FB_APP_ID,
    'secret' => FB_APP_SECRET,
));

$user = $facebook->getUser();

if($user)
{
    if ($user) {
        try {
            // Proceed knowing you have a logged in user who's authenticated.
            $user_profile = $facebook->api('/me');
            var_dump($user_profile); //You can now save this data
        } catch (FacebookApiException $e) {
            echo '<pre>'.htmlspecialchars(print_r($e, true)).'</pre>';
            $user = null;
        }
    }
}

?>

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执笔经年

2020-12-14 12:05

 //very simple just change this line
fb:login-button autologoutlink="true"

//with this one

fb:login-button autologoutlink="true" onlogin='your_ajax_fun_that_store_in_db()'

function your_ajax_fun_that_store_in_db(){
  FB.api('/me', function(response) {
     $.post( "ajax/store_user_info.php",response, function( data ) {
     //write you js code here !
     //you can use the (response) from facebook directly in your store_user_info.php as it will be sent in POST array
     });
 });
}
//last thing when you face such a problem the first thing to do is to go back to facebook reference of fun.

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误落风尘

2020-12-14 12:12

Subscribe to the event auth.login. If you do this, Facebook will call your handler after a login as happened.

In that handler, use FB.api to call the Graph API to get any information you desire. For example calling /me as shown in the second example will get you basic information about the logged in user.

Now you have all the data in JavaScript. To send that up to your server, do a plain old XMLHttpRequest/AJAX request. Your JavaScript library probably makes this easy -- in jQuery this is jQuery.ajax() -- but worst case you can use XHR directly.

Now you have the data on your server and you can do whatever you want, like store it in the database. If you only want to store the data once, just check that you haven't already stored info about that user ID yet.

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慢半拍i

2020-12-14 12:20

There's a hole in that solution -- this means the user can make up any information he wants and post an XHR back to my server. The server is going to need to check with Facebook directly.

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