如何在PHP中创建异步GET请求？ [英] How do I make an asynchronous GET request in PHP?

问题描述

我希望对不同服务器上的另一个脚本进行简单的GET请求。

I wish to make a simple GET request to another script on a different server. How do I do this?

在一种情况下，我只需要请求一个外部脚本，而不需要任何输出。

In one case, I just need to request an external script without the need for any output.

make_request('http://www.externalsite.com/script1.php?variable=45'); //example usage

在第二种情况下，我需要得到文本输出。

In the second case, I need to get the text output.

$output = make_request('http://www.externalsite.com/script2.php?variable=45');
echo $output; //string output

说实话，我不想搞乱CURL，真的是CURL的工作。我也不想使用http_get，因为我没有PECL扩展。

To be honest, I do not want to mess around with CURL as this isn't really the job of CURL. I also do not want to make use of http_get as I do not have the PECL extensions.

fsockopen能工作吗？如果是这样，我怎么做，而不读取文件的内容？是否有其他方法？

Would fsockopen work? If so, how do I do this without reading in the contents of the file? Is there no other way?

感谢所有

我应该添加，在第一种情况下，我不想等待脚本返回任何东西。

I should of added, in the first case, I do not want to wait for the script to return anything. As I understand file_get_contents() will wait for the page to load fully etc?

推荐答案

file_get_contents

file_get_contents will do what you want

$output = file_get_contents('http://www.example.com/');
echo $output;

编辑：取消GET请求并立即返回的一种方法。

One way to fire off a GET request and return immediately.

引用自 http：/ /petewarden.typepad.com/searchbrowser/2008/06/how-to-post-an.html

function curl_post_async($url, $params)
{
    foreach ($params as $key => &$val) {
      if (is_array($val)) $val = implode(',', $val);
        $post_params[] = $key.'='.urlencode($val);
    }
    $post_string = implode('&', $post_params);

    $parts=parse_url($url);

    $fp = fsockopen($parts['host'],
        isset($parts['port'])?$parts['port']:80,
        $errno, $errstr, 30);

    $out = "POST ".$parts['path']." HTTP/1.1\r\n";
    $out.= "Host: ".$parts['host']."\r\n";
    $out.= "Content-Type: application/x-www-form-urlencoded\r\n";
    $out.= "Content-Length: ".strlen($post_string)."\r\n";
    $out.= "Connection: Close\r\n\r\n";
    if (isset($post_string)) $out.= $post_string;

    fwrite($fp, $out);
    fclose($fp);
}

这样做是打开一个套接字，触发get请求，关闭套接字并返回。

What this does is open a socket, fire off a get request, and immediately close the socket and return.

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