Google apps脚本web应用和OAuth授权(PHP)

我需要在没有任何用户交互的情况下从我的php服务调用我的GAS web应用程序:

1. 脚本与项目
关联
2. 我从开发者控制台(http://note.io/1dq51gI)获得的所有凭据
3. 在php中，我获得访问令牌(令牌可以用于另一个google服务)
4. 我尝试发送get查询到我的脚本，总是有401响应(http://puu.sh/hX9VJ/fdce874ff5.png)
5. 这是部署设置- http://puu.sh/hXa5h/a4c8ad4ff2.png(作为用户访问应用程序，访问任何人)
在php中，我使用google php客户端库

    $client = new Google_Client();
    $client->setApplicationName('my app');
    $client->setClientId('my-id.apps.googleusercontent.com');
    $cred = new Google_Auth_AssertionCredentials(
        'me@developer.gserviceaccount.com',
        ['https://spreadsheets.google.com/feeds', 'https://www.googleapis.com/auth/drive.scripts'],
        file_get_contents(__DIR__ . '/google-app-key.p12')
    );
    $client->setAssertionCredentials($cred);
    if($client->isAccessTokenExpired()) {
        $client->getAuth()->refreshTokenWithAssertion($cred);
    }
    $objToken  = json_decode($client->getAccessToken());
    $accessToken = $objToken->access_token;
    $curl = curl_init();
    $header = [];
    $header[] = 'Content-type: application/json';
    $header[] = 'Authorization: Bearer '.$accessToken;
    curl_setopt($curl, CURLOPT_HTTPHEADER,$header);
    curl_setopt($curl, CURLOPT_POST,true);
    curl_setopt($curl, CURLOPT_URL, 'https://script.google.com/macros/s/script-id/exec?query-params');
    curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'GET');
    curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.9) Gecko/20100315 Firefox/3.5.9");
    curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
    curl_setopt($curl, CURLOPT_SSLVERSION, 1);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_HEADER, true);

    $rest  = curl_exec($curl);
    $error = curl_error($curl);
    $info  = curl_getinfo($curl);
    curl_close($curl);

我总是得到401回复谷歌，这是一个问题。

谢谢!