PHP应用程序中的Guzzle池

我正在尝试在PHP中使用Guzzle池。但是我在处理异步请求时遇到了困难。下面是代码片段。

    $client = new \GuzzleHttp\Client();

    function test() 
    {
        $client = new \GuzzleHttp\Client();   
        $request = $client->createRequest('GET', 'http://l/?n=0', ['future' => true]);

        $client->send($request)->then(function ($response) {
            //echo 'Got a response! ' . $response;
            return "\n".$response->getBody();
        });

    }
    $res = test();
    var_dump($res); // echoes null - I know why it does so but how to resolve the issue.

---

有人知道如何让函数等待并得到正确的结果。

如果可以返回它，那么它在代码风格上就不是异步的。归还承诺，并在外面打开它

function test() 
{
   $client = new \GuzzleHttp\Client();   
   $request = $client->createRequest('GET', 'http://l/?n=0', ['future' => true]);

   // note the return
   return $client->send($request)->then(function ($response) {
       //echo 'Got a response! ' . $response;
       return "\n".$response->getBody();
   });   
}
test()->then(function($body){
     echo $body; // access body here inside `then`
});

---

另外一个我想用guzzle 6、postAsync和Pool分享的例子

function postInBulk($inputs)
{
    $client = new Client([
        'base_uri' => 'https://a.b.com'
    ]);
    $headers = [
        'Authorization' => 'Bearer token_from_directus_user'
    ];

    $requests = function ($a) use ($client, $headers) {
        for ($i = 0; $i < count($a); $i++) {
            yield function() use ($client, $headers) {
                return $client->postAsync('https://a.com/project/items/collection', [
                    'headers' => $headers,
                    'json' => [
                        "snippet" => "snippet",
                        "rank" => "1",
                        "status" => "published"
                    ]        
                ]);
            };
        }
        
    };

    $pool = new Pool($client, $requests($inputs),[
        'concurrency' => 5,
        'fulfilled' => function (Response $response, $index) {
            // this is delivered each successful response
        },
        'rejected' => function (RequestException $reason, $index) {
            // this is delivered each failed request
        },
    ]);

    $pool->promise()->wait();
}

函数postInBulk（$inputs）
{
$client=新客户端([
'基本uri'=>'https://a.b.com'
]);
$headers=[
“授权”=>“来自\u directus\u用户的承载令牌”
];
$requests=函数（$a）使用（$client，$headers）{
对于（$i=0；$ipostAsync（'https://a.com/project/items/collection', [
'headers'=>$headers，
“json”=>[
“代码段”=>“代码段”，
“排名”=>“1”，
“状态”=>“已发布”
]        
]);
};
}
};
$pool=新池（$client，$requests，$input）[
“并发”=>5，
“已完成”=>函数（响应$Response，$index）{
//每一次成功的响应都会传递此信息
},
“已拒绝”=>函数（RequestException$reason$index）{
//这将在每个失败的请求中传递
},
]);
$pool->promise（）->wait（）；
}