如何在 PHP 中组合从 parallelcurl 返回的 JSON 编码数组 - how to combine json encoded arrays returned from parallelcurl in PHP

我正在尝试实现我在这个网站上找到的解决方案：

PHP 中的并行 cURL 执行

但是，我在合并所有结果并将其发送到 XMLhttpRequest 进行处理时遇到了问题。最初，XMLhttpRequest 将调用一个并行执行其他 PHP 脚本的 PHP 脚本。这是我的主要PHP脚本（由XMLhttpRequest调用）：

//parallelcurl_index.php
$param1 = $_REQUEST['param1'];
$param2 = $_REQUEST['param2'];

require_once('parallelcurl.php');
$url1 = "http://example.com/script1.php?param1=" . $param1 . "&param2=" . $param2;
$url2 = "http://example.com/script2.php?param1=" . $param1 . "&param2=" . $param2;
$url3 = "http://example.com/script3.php?param1=" . $param1 . "&param2=" . $param2;
$url4 = "http://example.com/script4.php?param1=" . $param1 . "&param2=" . $param2;
$url5 = "http://example.com/script5.php?param1=" . $param1 . "&param2=" . $param2;
$url6 = "http://example.com/script6.php?param1=" . $param1 . "&param2=" . $param2;
/* 
 each of the above urls will execute one or more oracle sql queries and procedures and store the results in array which 
 will be sent to this script.
 example $url1 will send results like this:
$url1_response = array('city' => $city, 'country' => $country);
echo json_encode($url1_response); 
*/
$max_requests = 10;
$curl_options = array(
    CURLOPT_SSL_VERIFYPEER => FALSE,
    CURLOPT_SSL_VERIFYHOST => FALSE
);
$parallel_curl = new ParallelCurl($max_requests, $curl_options);
// Start 6 parallel requests. All three will be started simultaneously.
$parallel_curl->startRequest($url1, 'on_request_done');
$parallel_curl->startRequest($url2, 'on_request_done');
$parallel_curl->startRequest($url3, 'on_request_done');
$parallel_curl->startRequest($url4, 'on_request_done');
$parallel_curl->startRequest($url5, 'on_request_done');
$parallel_curl->startRequest($url6, 'on_request_done');
$parallel_curl->finishAllRequests();

// This function gets called back for each request that completes
function on_request_done($content, $url, $ch, $search) {
    $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    if ($httpcode !== 200) {
        print "Fetch error $httpcode for '$url''n";
        return;
    }
    $responseobject = json_decode($content, true);
     // I tried this, to combine the arrays but did not work:
     //$segments = array();
     //$segments = array_merge($responseobject, $segments);
     //echo json_encode($segments);

    // send results from all above scripts to xmlhttprequest 
    echo json_encode($responseobject); 
}

回到xmlhttprequest，我可以检查返回的所有数据：

alert(xmlHttp.responseText);

alert（）输出如下：

{"city":"Muscat","country":"Oman"}{"company":"OTL","Department":"IT"}

我可以看到每个json数组之间没有逗号分隔符，因此eval（）将失败：

 var  responseArr = eval('(' + xmlHttp.responseText + ')');

如果我只在 $parallel_curl->startRequest（）中为一个 url 运行脚本并注释其他五个，它可以毫无问题地工作。任何帮助将不胜感激。

嗯，我不是粉丝或并行卷曲请求（为什么要捆绑网络服务器，像 GearMan 这样的东西更适合），但如果你要走这条路：

class ReturnCollector {
   private $data = array();
   function addData($content){
      $this->data[] = json_decode($content, true);
   }
   function getData(){
      return $this->data);
   }
   function outputData(){
      echo json_encode($this->getData());
   }
}

$collector = new ReturnCollector();
$parallel_curl->startRequest($url1, array($collector,'addData'));
$parallel_curl->startRequest($url2, array($collector,'addData'));
$parallel_curl->startRequest($url3, array($collector,'addData'));
//etc...
$parallel_curl->finishAllRequests();
$collector->outputData();

我已经修改了类代码：

class ReturnCollector {
    private $data     = array();
    private $tmpArr   = array();
    function addData($content){
        $this->tmpArr   = json_decode($content, true);
        $this->data = array_merge($this->tmpArr, $this->data);
    }
    function getData(){
        return $this->data;
    }
    function outputData(){
        echo json_encode($this->getData());
    }
}

现在它工作正常，非常感谢您的帮助。