CURL - 获取从 Google API 检索所有电子邮件

我正在使用cURL通过Google API从用户那里获取所有电子邮件。以下 https://developers.google.com/admin-sdk/email-audit/#retrieving_all_email_monitors_of_a_source_user。

根据本教程，服务器返回"201 已创建"状态代码以成功。但是，我的结果返回"200 OK"代码。

这是代码授权

$data = array(
'accountType' => 'HOSTED_OR_GOOGLE',  
'Email' => 'myEmail',  
'Passwd' => 'myPassword',  
'source'=>'PHP-cUrl-Example',  
'service'=>'apps');  
$ch = curl_init();  
curl_setopt($ch, CURLOPT_URL, "https://www.google.com/accounts/ClientLogin");  
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);  
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);   
curl_setopt($ch, CURLOPT_POST, true);  
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);  
$response = curl_exec($ch);  

这是检索源用户的所有电子邮件监视器的代码

preg_match("/Auth=([a-z0-9_-]+)/i", $response, $matches);
$auth = $matches[1];
$header = array('Content-Type: application/atom+xml; charset=utf-8',
            'Authorization: GoogleLogin auth='.trim($auth),
    );
$url_email ="https://apps-apis.google.com/a/feeds/compliance/audit/mail/monitor/mydomain/username";
curl_setopt($ch, CURLOPT_URL, $url_email); 
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);  
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  
curl_setopt($ch, CURLOPT_POST, FALSE);
curl_setopt($ch, CURLOPT_HEADER, false); 
$response = curl_exec($ch);
$response = simplexml_load_string($response);
curl_close($ch);
print_r($response);

请帮帮我？