Using Facebook Object in Multiple PHP Files - facebook

Question

I am creating a Facebook Application containing multiple PHP pages. If I reinstantiate Facebook objects in all the files I get an Error Invalid OAuth access token signature.
I have tried a number of alternatives, also the $facebook->getSession() function doesn't work in the new framework and is deprecated.
So I tried to keep the access token in the session and use the same access token in my next PHP file's Facebook object.
On my first page i Have instantiated my App using:
$app_id = "107684706025330";
$app_secret = "__SECRET__";
$my_url = "http://www.sentimentalcalligraphy.in/wp-content/then_n_now/";
$config = array(
'appId' => $app_id,
'secret' => $app_secret,
'cookie' => true,
);
session_start();
$facebook = new Facebook($config);
$access_token = $facebook->getAccessToken();
echo $access_token;
$_SESSION['fob'] = $access_token;
On the next PHP file were I need to use the Facebook object for the second time:
$config = array(
'appId' => '107684706025330',
'secret' => '__SECRET__',
);
$facebook = new Facebook($config);
$access_tocken = $_SESSION['fob'];
echo $access_token;
$facebook->setAccessToken($access_token);
I still get an error that the access token is not valid. How am I supposed to use this. I need to use the following code in my second PHP file:
$friends = $facebook->api('/me/friends','GET');
Thanking you in Advance,
Nasir

Answer 1

I have a some code for Facebook API. I want to share with you.
// App user account and password
$app_id = 'blabla';
$app_secret = 'blabla';
// Create our Application instance (replace this with your appId and secret).
$facebook = new Facebook(array(
'appId' => $app_id,
'secret' => $app_secret,
));
// Get User ID
$user = $facebook->getUser();
// Login or logout url will be needed depending on current user state.
if ($user) {
$logoutUrl = $facebook->getLogoutUrl();
} else {
$loginUrl = $facebook->getLoginUrl();
}
$access_token = $facebook->getAccessToken();
if(isset($_GET["code"])){
// Get our app user feed
$user_profile_feed = $facebook->api('/me');
// Insert user id into users table while user login our app
// We have to control user who inserted our users table after before
$query_is_user = mysql_query("SELECT * FROM `users` WHERE `user_id` = ".$user_profile_feed['id']) or die("hata 1");
$count = mysql_num_rows($query_is_user);
if($count == 0) {
mysql_query("INSERT INTO `users`(`user_id`) VALUES (".$user_profile_feed['id'].")") or die("hata 2");
echo '<script language=Javascript>alert("Uygulamamiza Basariyla Giris Yaptiniz...");</script>';
}
$token_url = "https://graph.facebook.com/oauth/access_token?"
. "client_id=" . $app_id . "&redirect_uri=" . "http://apps.facebook.com/machine_learning/"
. "&client_secret=" . $app_secret . "&code=" . $_GET["code"];
$response = #file_get_contents($token_url);
$params = null;
parse_str($response, $params);
mysql_query("UPDATE users SET access_token='$params[access_token]' WHERE user_id='$user_profile_feed[id]'") or die("hata 4");
}
$url = "https://graph.facebook.com/oauth/authorize?"
."client_id=262609310449368&"
."redirect_uri=http://apps.facebook.com/machine_learning/&scope=read_stream";