$_SESSION['state'] = sha(uniqid(rand(), true));
$GitHubAuth->state = $_SESSION['state'];
$GitHubAuth->authenticate();
} else {
if (isset($_SESSION['state'], $_GET['state']) && $_SESSION['state'] == $_GET['state']) {
unset($_SESSION['state']);
$GitHubAuth->callback(function ($return) {
$_SESSION['git_access_token'] = OAuth2::parseToken($return);
header('Location: /examples/oauth/github.php'); exit;
});
} else {
header('Location: /examples/oauth/error.php'); exit;
}
}
} else {