PHP：$ facebook-getUser（）总是返回0

Question

    <?php
session_start();
require_once 'Facebook/facebook.php';

$facebook = new Facebook(array(

    'appId' => "347086135470127",
    'secret' => "f6d61cc9688ca34a0765f2ddbb138998",
    'cookie' => true,
        'domain' => "tinser.host56.com"

));

$session = $facebook->getUser();
echo $session;

if($session == 0) {
    $loginUrl = $facebook->getLoginUrl(array( 
        'display' => 'popup',
        'redirect_uri' => 'http://tinser.host56.com/lib/php/facebookinit.php'
        ));
        $logoutUrl = $facebook->getLogoutUrl(array('redirect_uri' => 'http://tinser.host56.com/lib/php/facebookinit.php'));
    echo "<a href='$loginUrl'>Login with facebook</a><br><a href='$logoutUrl'>Logout with facebook</a>";
} else {
    $api = $facebook->api('me');
    print_r($api);  
}
?>

<小时/> 它说CSRF状态令牌无效。我试图纠正base_facebook.php中的getCode()。这是行不通的。 PHP SDK版本：3.2.3。我等待你的回应。感谢