PHP Curl异步响应

问题描述

我有一个PHP文件，该文件通过curl调用另一个PHP文件。我试图让第二个文件将响应发送回第一个文件，以使其知道它已开始。问题是第一个不能等待第一个完成执行，因为这可能需要一分钟或更长的时间，我需要它立即发送响应，然后再处理常规业务。我尝试在第二个文件的顶部使用回显，但第一个没有得到响应。
如何发送未完成执行的响应？

I have a PHP file that invokes another PHP file via curl. I am trying to have the second file send a response back to the first to let it know that it started. The problem is the first can't wait for the first to finish execution because that can take a minute or more, I need it to send a response immediately then go about it's regular business. I tried using an echo at the top of the second file, but the first doesn't get that as a response.How do I send back a response without finishing execution?

file1.php

<?php
$url = 'file2.php';
$params = array('data'=>$data,'moredata'=>$moredata);

$options = array(
    CURLOPT_RETURNTRANSFER => true,     // return web page
    CURLOPT_HEADER         => false,    // don't return headers
    CURLOPT_FOLLOWLOCATION => true,     // follow redirects
    CURLOPT_ENCODING       => "",       // handle all encodings
    CURLOPT_USERAGENT      => "Mozilla", // who am i
    CURLOPT_AUTOREFERER    => true,     // set referer on redirect
    CURLOPT_CONNECTTIMEOUT => 120,      // timeout on connect
    CURLOPT_TIMEOUT        => 120,      // timeout on response
    CURLOPT_MAXREDIRS      => 10,       // stop after 10 redirects
    CURLOPT_TIMEOUT        => 10,        // don't wait too long
    CURLOPT_POST           => true,     // Use Method POST (not GET)
    CURLOPT_POSTFIELDS     => http_build_query($params)
);
$ch = curl_init($url);

curl_setopt_array( $ch, $options );
$response = curl_exec($ch); // See that the page started.
curl_close($ch);
echo  'Response: ' . $response;
?>

file2.php

<?php
/* This is the top of the file. */
echo 'I started.';
.
.
.
// Other CODE
.
.
.
?>

当我运行file1.php时，结果为：响应：但我希望它是响应：我开始了。'我知道file2.php被启动是因为执行了'Other CODE'，但是回声没有被发送回file1.php，为什么？

When I run file1.php it results in: 'Response: ' but I expect it to be 'Response: I started.' I know that file2.php gets started because 'Other CODE' get executed, but The echo doesn't get sent back to file1.php, why?

推荐答案

答案最终是CURL的行为不像浏览器：

The answer ended up being that CURL does not behave like a browser:

我首先运行第二个文件，然后运行第二个文件。第二个文件等待完成文件写入，显然第一个文件完成了写操作。

I ended up running my 2nd file first and my 1st file second. The 2nd file waited for a 'finished' file write that the 1st file did once it, obviously, finished.

在这一点上，似乎数据库是存储消息的更好的位置，以便文件能够在彼此之间传递，但是文件也可以用于快速而肮脏的工作。

At this point, it seems like the database would be a better place to store messages for files to be able to pass between each other, but a file would also work for a quick and dirty job.

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