无法启动会话：已经为PHP PHP SDK启动了PHP（$ _SESSION已设置）

Question

I'm implementing facebook app in symfony. I used facebook php SDK

When I call

$me=$facebook->api("/me");

    if(isset($me['id']))
        $response=$facebook->api("/".$me['id']."/notifications",
                "POST",
                array (
                        'access_token'=>$accesstoken,
                        'href' => 'notification',
                        'template' => $message,
                ));

In Symfony action I'm getting:

Failed to start the session: already started by PHP ($_SESSION is set) 

How can I solve this issue?

Answer 1

You add a @ sign in from of session_start() to suppress the error. This way, you can keep the line of code incase the session wasn't previously started, but the error will be hidden in case it was already started:

@session_start();