php - curl向api上传图片失败

    '**************',
            'status' => 'img',
            'visible'=>1,
            'pic'=>'@'.realpath($path).";type=".$type.";filename=".$filename
        );
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, true );
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $return_data = curl_exec($ch);
        curl_close($ch);
        $decode = json_decode($return_data);
        echo $decode->original_pic;       
   }

    if ($_POST) {
        $url = 'https://upload.api.weibo.com/2/statuses/upload.json';
        $path = $_SERVER['DOCUMENT_ROOT'];
        $tmpname = $_FILES['fname']['name'];
        $tmpfile = $_FILES['fname']['tmp_name'];
        $tmpType = $_FILES['fname']['type'];
        upload_file($url,$tmpname,$tmpfile,$tmpType);
        exit;
    }
    echo '

    
    
';
?>

页面没有报错信息，而且我打开微博的api显示405错误，不知道是不是api本身的原因。