如何使用 PHP header() 函数 POST 到页面?

发布于 2024-07-14 17:42:36 字数 741 浏览 4 评论 0原文

我在 此处 找到了以下代码,我认为它可以满足我的要求,但它不起作用:

$host = "www.example.com";
$path = "/path/to/script.php";
$data = "data1=value1&data2=value2";
$data = urlencode($data);

header("POST $path HTTP/1.1\r\n");
header("Host: $host\r\n");
header("Content-type: application/x-www-form-urlencoded\r\n");
header("Content-length: " . strlen($data) . "\r\n");
header("Connection: close\r\n\r\n");
header($data);

我希望发布表单数据而不将用户发送到中间页面,然后使用 JavaScript 重定向它们。 我也不想使用 GET,所以使用后退按钮不太容易。

这段代码有问题吗? 或者有更好的方法吗?

编辑 我在想标题函数会做什么。 我想我可以让浏览器将数据发送回服务器,但这不是它的目的。 相反,我在代码中找到了一种方法来根本不需要发布帖子(不会中断,只是继续切换中的下一个案例)。

I found the following code on here that I think does what I want, but it doesn't work:

$host = "www.example.com";
$path = "/path/to/script.php";
$data = "data1=value1&data2=value2";
$data = urlencode($data);

header("POST $path HTTP/1.1\r\n");
header("Host: $host\r\n");
header("Content-type: application/x-www-form-urlencoded\r\n");
header("Content-length: " . strlen($data) . "\r\n");
header("Connection: close\r\n\r\n");
header($data);

I'm looking to post form data without sending users to a middle page and then using JavaScript to redirect them. I also don't want to use GET so it isn't as easy to use the back button.

Is there something wrong with this code? Or is there a better method?

Edit I was thinking of what the header function would do. I was thinking I could get the browser to post back to the server with the data, but this isn't what it's meant to do. Instead, I found a way in my code to avoid the need for a post at all (not breaking and just continuing onto the next case within the switch).

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评论(5

黯淡〆 2024-07-21 17:42:36

header 函数用于将 HTTP 响应标头发送回用户(即,您不能使用它来创建请求标头。

请问您为什么要这样做?为什么要模拟 POST 请求,因为您可以就在那里,然后对我假设 script.php 当然驻留在您的服务器上

要创建 POST 请求,请使用 fsockopen() 打开到主机的 TCP 连接,然后在从 fsockopen() 返回的处理程序上使用 fwrite() 。与您在 OP 的标头函数中使用的值相同。或者,您可以使用 cURL。

The header function is used to send HTTP response headers back to the user (i.e. you cannot use it to create request headers.

May I ask why are you doing this? Why simulate a POST request when you can just right there and then act on the data someway? I'm assuming of course script.php resides on your server.

To create a POST request, open a up a TCP connection to the host using fsockopen(), then use fwrite() on the handler returned from fsockopen() with the same values you used in the header functions in the OP. Alternatively, you can use cURL.

顾忌 2024-07-21 17:42:36

今天非常需要这个问题的答案,因为并不是每个人都想使用 cURL 来使用 Web 服务。 PHP 也允许使用以下代码

function get_info()
{
    $post_data = array(
        'test' => 'foobar',
        'okay' => 'yes',
        'number' => 2
    );

    // Send a request to example.com
    $result = $this->post_request('http://www.example.com/', $post_data);

    if ($result['status'] == 'ok'){

        // Print headers
        echo $result['header'];

        echo '<hr />';

        // print the result of the whole request:
        echo $result['content'];

    }
    else {
        echo 'A error occured: ' . $result['error'];
    }

}

function post_request($url, $data, $referer='') {

    // Convert the data array into URL Parameters like a=b&foo=bar etc.
    $data = http_build_query($data);

    // parse the given URL
    $url = parse_url($url);

    if ($url['scheme'] != 'http') {
        die('Error: Only HTTP request are supported !');
    }

    // extract host and path:
    $host = $url['host'];
    $path = $url['path'];

    // open a socket connection on port 80 - timeout: 30 sec
    $fp = fsockopen($host, 80, $errno, $errstr, 30);

    if ($fp){

        // send the request headers:
        fputs($fp, "POST $path HTTP/1.1\r\n");
        fputs($fp, "Host: $host\r\n");

        if ($referer != '')
            fputs($fp, "Referer: $referer\r\n");

        fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
        fputs($fp, "Content-length: ". strlen($data) ."\r\n");
        fputs($fp, "Connection: close\r\n\r\n");
        fputs($fp, $data);

        $result = '';
        while(!feof($fp)) {
            // receive the results of the request
            $result .= fgets($fp, 128);
        }
    }
    else {
        return array(
            'status' => 'err',
            'error' => "$errstr ($errno)"
        );
    }

    // close the socket connection:
    fclose($fp);

    // split the result header from the content
    $result = explode("\r\n\r\n", $result, 2);

    $header = isset($result[0]) ? $result[0] : '';
    $content = isset($result[1]) ? $result[1] : '';

    // return as structured array:
    return array(
        'status' => 'ok',
        'header' => $header,
        'content' => $content);

}

The answer to this is very needed today because not everyone wants to use cURL to consume web services. Also PHP does allow for this using the following code

function get_info()
{
    $post_data = array(
        'test' => 'foobar',
        'okay' => 'yes',
        'number' => 2
    );

    // Send a request to example.com
    $result = $this->post_request('http://www.example.com/', $post_data);

    if ($result['status'] == 'ok'){

        // Print headers
        echo $result['header'];

        echo '<hr />';

        // print the result of the whole request:
        echo $result['content'];

    }
    else {
        echo 'A error occured: ' . $result['error'];
    }

}

function post_request($url, $data, $referer='') {

    // Convert the data array into URL Parameters like a=b&foo=bar etc.
    $data = http_build_query($data);

    // parse the given URL
    $url = parse_url($url);

    if ($url['scheme'] != 'http') {
        die('Error: Only HTTP request are supported !');
    }

    // extract host and path:
    $host = $url['host'];
    $path = $url['path'];

    // open a socket connection on port 80 - timeout: 30 sec
    $fp = fsockopen($host, 80, $errno, $errstr, 30);

    if ($fp){

        // send the request headers:
        fputs($fp, "POST $path HTTP/1.1\r\n");
        fputs($fp, "Host: $host\r\n");

        if ($referer != '')
            fputs($fp, "Referer: $referer\r\n");

        fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
        fputs($fp, "Content-length: ". strlen($data) ."\r\n");
        fputs($fp, "Connection: close\r\n\r\n");
        fputs($fp, $data);

        $result = '';
        while(!feof($fp)) {
            // receive the results of the request
            $result .= fgets($fp, 128);
        }
    }
    else {
        return array(
            'status' => 'err',
            'error' => "$errstr ($errno)"
        );
    }

    // close the socket connection:
    fclose($fp);

    // split the result header from the content
    $result = explode("\r\n\r\n", $result, 2);

    $header = isset($result[0]) ? $result[0] : '';
    $content = isset($result[1]) ? $result[1] : '';

    // return as structured array:
    return array(
        'status' => 'ok',
        'header' => $header,
        'content' => $content);

}
止于盛夏 2024-07-21 17:42:36

除了Salaryman所说的,看看PEAR中的类,那里有HTTP请求类即使您的 PHP 发行版中没有安装 cURL 扩展,也可以使用。

In addition to what Salaryman said, take a look at the classes in PEAR, there are HTTP request classes there that you can use even if you do not have the cURL extension installed in your PHP distribution.

凡间太子 2024-07-21 17:42:36

有一个很好的课程可以满足您的需求。 可以在以下位置下载:http://sourceforge.net/projects/snoopy/

There is a good class that does what you want. It can be downloaded at: http://sourceforge.net/projects/snoopy/

凉月流沐 2024-07-21 17:42:36
private function sendHttpRequest($host, $path, $query, $port=80){
    header("POST $path HTTP/1.1\r\n" );
    header("Host: $host\r\n" );
    header("Content-type: application/x-www-form-urlencoded\r\n" );
    header("Content-length: " . strlen($query) . "\r\n" );
    header("Connection: close\r\n\r\n" );
    header($query);
}

这将立即让你

private function sendHttpRequest($host, $path, $query, $port=80){
    header("POST $path HTTP/1.1\r\n" );
    header("Host: $host\r\n" );
    header("Content-type: application/x-www-form-urlencoded\r\n" );
    header("Content-length: " . strlen($query) . "\r\n" );
    header("Connection: close\r\n\r\n" );
    header($query);
}

This will get you right away

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