Сеанс Facebook становится пустым после аутентификации с помощью PHP SDK
Я могу войти в систему с помощью своего приложения на Facebook, но сессия, которую я получаю, всегда NULL.
Вот весь мой PHP-код:
<?phpsession_start(); //Session should always be active
$app_id = 'mySexyAppID'; //DEV Name: PHP_SDK-Prev-FB\0.0.2b4
$app_secret = 'someS3cr3tStuff';
$required_scope = 'public_profile, publish_actions,publish_stream,manage_pages,user_groups'; //Permissions required
$redirect_url = 'http://localhost/fb/facebook-sdk-v4-sample-files/index2.php'; //FB redirects to this page with a code
require_once __DIR__ . "/facebook-php-sdk-v4-4.0-dev/autoload.php"; //include autoload from SDK folder
//define output vars
$responseMembers_String = '0';
//import required class to the current scope
use Facebook\FacebookSession;
use Facebook\FacebookRequest;
use Facebook\GraphUser;
use Facebook\FacebookRedirectLoginHelper;
FacebookSession::setDefaultApplication($app_id , $app_secret);
$helper = new FacebookRedirectLoginHelper($redirect_url);
/**************************************************************/
// see if a existing session exists
if ( isset( $_SESSION ) && isset( $_SESSION['fb_token'] ) ) {
// create new session from saved access_token
$session = new FacebookSession( $_SESSION['fb_token'] );
// validate the access_token to make sure it's still valid
try {
if ( !$session->validate() ) {
$session = null;
}
} catch ( Exception $e ) {
// catch any exceptions
$session = null;
}
}
if ( !isset( $session ) || $session === null ) {
// no session exists
try {
$session = $helper->getSessionFromRedirect();
$_SESSION["FBSession"] = $session;
} catch( FacebookRequestException $ex ) {
print_r( $ex->getMessage());
} catch( Exception $ex ) {
print_r( $ex->getMessage());
}
}
// see if we have a session
if ( isset( $session ) ) {
$_SESSION["SessionSetText"] = "Session set with success!";
}
/**************************************************************///if user wants to log out
if(isset($_GET["log-out"]) && $_GET["log-out"]==1){
unset($_SESSION["fb_user_details"]);
//session ver is set, redirect user
header("location: ". $redirect_url);
}
//Test normal login / logout with session
if ($session){ //if we have the FB session
//get user data
$user_profile = (new FacebookRequest($session, 'GET', '/me'))->execute()->getGraphObject(GraphUser::className());
$user_accounts = (new FacebookRequest($session, 'GET', '/me/accounts'))->execute()->getGraphObject(GraphUser::className());
$user_groups = (new FacebookRequest($session, 'GET', '/me/groups'))->execute()->getGraphObject(GraphUser::className());
//save session var as array
$_SESSION["fb_user_details"] = $user_profile->asArray();
$_SESSION["accounts"] = $user_accounts->asArray();
$_SESSION["groups"] = $user_groups->asArray();
$user_id = ( isset( $_SESSION["fb_user_details"]["id"] ) )? $_SESSION["fb_user_details"]["id"] : "";
$user_name = ( isset( $_SESSION["fb_user_details"]["name"] ) )? $_SESSION["fb_user_details"]["name"] : "";
$user_email = ( isset( $_SESSION["fb_user_details"]["email"] ) )? $_SESSION["fb_user_details"]["email"] : "";
//session var is set, redirect user
header("location: ". $redirect_url);
}
if(isset($_POST["group_submit"]))
{
//user wants informations about a group where he is administrator
$userGroupId = $_POST["usergroups"];
//$group_url = '/'.$userGroupId.'/members';
//request members via facebook graph api
/**************************************************/
$requestMembers = new FacebookRequest($session, 'GET', '/'.$userGroupId.'/members');
$requestMembers_response = $requestMembers->execute()->getGraphObject()->asArray();
/**************************************************/
$responseMembers_String = $requestMembers_response;
$_SESSION["GroupMembers"] = $responseMembers_String;
}
?>
<html>
<head>
<meta charset="utf-8" />
<title>Demo StackOverflow</title>
</head>
<body>
<form id="form" name="form" method="POST" action="index2.php">
<?php
if(isset($_SESSION["fb_user_details"]))
{
print 'Hi '.$_SESSION["fb_user_details"]["name"].' you are logged in! [ <a href="?log-out=1">log-out</a> ] ';
}
else{
//display login url
$login_url = $helper->getLoginUrl( array( 'scope' => $required_scope ) );
echo '<a href="'.$login_url.'">Connect with Facebook</a>';
};
?>
<br />
<br />
<?php
if(isset($_SESSION["fb_user_details"]))
{
print 'Some infos about the current user ['.$_SESSION["fb_user_details"]["first_name"].']: <pre>';
print_r($_SESSION["fb_user_details"]);
print '</pre>';
};
?>
<br />
<select name="usergroups" id="ugroups">
<?php
foreach ($_SESSION["groups"]["data"] as $group) {
//only fetch groups where user is admin!
if($group->administrator)
{
echo '<option value="'.$group->id.'">'.$group->name.'</option>';
}
} ;
?>
</select>
<br />
<button type="submit" class="button" id="group_submit" name="group_submit">Get some informations!</button><br />
<label id="GroupMembers" name="GroupMembers"><?php if (!(isset($_SESSION["GroupMembers"]))){print 'not set now!';} elseif(isset($_SESSION["GroupMembers"])) {print 'the selected group has '.$responseMembers_String.' Members';} ?></label><br />
<label id="lInfos" name="lInfos"><?php if (!(isset($_SESSION["FBSession"]))){print '$session not set!!';} elseif(isset($_SESSION["FBSession"])) {print 'Session set!';} ?></label>
</form>
</body>
</html>
Когда я вызываю функцию графа (запрашиваю членов группы: $requestMembers = new FacebookRequest($session, 'GET', '/'.$userSelectedGroupID.'/members');) Я получаю следующую ошибку:
Catchable fatal error: Argument 1 passed to Facebook\FacebookRequest::__construct() must be an instance of Facebook\FacebookSession, null given
Я обновил вопрос и добавил полный пример со всем кодом.
Я понял, что у меня есть сессия где угодно, потому что я могу выбрать группы пользователей.
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