GuzzleHttp 400 500 时获取内容的方法

http_errors

Summary: Set to false to disable throwing exceptions on an HTTP protocol errors (i.e., 4xx and 5xx responses). Exceptions are thrown by default when HTTP protocol errors are encountered.
Types: bool
Default: true
Constant: GuzzleHttp\RequestOptions::HTTP_ERRORS

$client->request('GET', '/status/500');
// Throws a GuzzleHttp\Exception\ServerException

$res = $client->request('GET', '/status/500', ['http_errors' => false]);
echo $res->getStatusCode();
// 500