Facebook Authentication window does not display? - php

Question

I have a file named fbmain.php which do Authentication part of my facebook app. But it doesn't display the Authentication window?
//fbmain.php
<?php
//facebook application
//set facebook application id, secret key and api key here
$fbconfig['appid' ] = "MY_APP_ID";
$fbconfig['secret'] = "MY_APP_SECRET";
$uid = null; //facebook user id
try{
include_once "facebook.php";
}catch(Exception $o){
echo '<pre>';
print_r($o);
echo '</pre>';
}
// Create our Application instance.
$facebook = new Facebook(array(
'appId' => $fbconfig['appid'],
'secret' => $fbconfig['secret'],
'cookie' => true,
));
//Facebook Authentication part
$session = $facebook->getSession();
$loginUrl = $facebook->getLoginUrl(
array(
'canvas' => 1,
'fbconnect' => 0,
'req_perms' => 'email,publish_stream,status_update,user_birthday,user_location,user_work_history,user_likes,user_photos'
)
);
if (!$session) {
echo "<script type='text/javascript'>top.location.href = '$loginUrl';</script>";
exit;
}
if ($session) {
echo "<br/>session ok"; //It create a session and disply 'session ok' string
try {
$uid = $facebook->getUser();
} catch (FacebookApiException $e) {
echo "<script type='text/javascript'>top.location.href = '$loginUrl';</script>";
exit;
}
}
?>
Can anyone please help me with this?

Answer 1

Which version of PHP-SDK you are using??
I think you can get rid of getSession() and use just getUser().
change your code as below and try again..
$uid = $facebook->getUser();
if ($uid) {
// do some api calls or something else
}
else
{
echo "<script type='text/javascript'>top.location.href = '$loginUrl';</script>";
}
else in index.php just include your fbmain.php and use a image button where you can link the $loginurl..