PHP facebook::getSignedRequest示例

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<?php 
bigtitle();
/*If account creation is closed, do not show the page!*/
if ($account_creation_closed) {
    die("Server Is Currently Closed To New Players");
}
##
##
## New Registration Process
##
##
$facebook = new facebook(array('appId' => FB_ID, 'secret' => FB_SECRET));
$request = $facebook->getSignedRequest();
if ($request) {
    $register = $request['registration'];
    try {
        $db = db::init();
        $fbId = isset($request['user_id']) ? $request['user_id'] : 0;
        $user = new user();
        if ($fbId != 0) {
            if ($user->fbLogin($fbId)) {
                /*They have account, throw them back to the main page*/
                header('Location: index.php');
                exit;
            }
        }
        $sth = $db->prepare("SELECT * FROM " . $db_prefix . "account WHERE username = ?");
        $sth->execute(array($register['username']));