PHP-使用无卷曲http web请求将XML数据发布到网关

我试图找到一种无卷曲的方式，通过http web请求将数据发布到第三方支付网关。我开发了下面的代码，它实际上成功地与接收页面进行了通信，但显然没有发送POST数据

<?php
function makeWebRequest()
{
    //URL where to send the data via POST
    $url = 'http://localhost/connect_to_gateway/receive.php';

    //the actual data
    $xml = '<?xml version="1.0" encoding="UTF-8"?>' .
            '<test>' .
                'Hi there!' .
            '</test>';
    $data = array('xml' => $xml);

    //prepare the HTTP Headers
    $content_type = 'text/xml';
    $data = http_build_query($data);
    // use key 'http' even if you send the request to https://...
    $options = array(
        'http' => array(
            'method'  => 'POST',
            'header'  => 'Content-type: ' . addslashes($content_type) .'\r\n'
                            . 'Content-Length: ' . strlen($data) . '\r\n',
            'content' => $data,
        ),
    );
    $context  = stream_context_create($options);

    /*send the data using a cURL-less method*/
    $result = file_get_contents($url, false, $context);
    echo 'file_get_contents<br/>';
    var_dump($result); /*  <===  POST DATA NOT ARRIVING AT DESTINATION (I only receive a string with "START- FINISH - ") */
    echo '<br/><br/><br/><br/>';
}

//call the function
makeWebRequest(); 
?>

任何帮助都将不胜感激

对于那些问我为什么要避免使用cURL的人来说，这是因为libcurl并不总是安装在每个人的服务器上，我正试图找到一种方法来实现同样的目的，而不必要求管理员安装libcurl（如果libcurl不是在原始安装中安装的话）。。我正在尝试使用“香草php”

其他类似的stackoverflow帖子没有帮助：

---

我找到了解决问题的方法：）
我发现，当内容类型不是application/x-www-form-urlencoded时，PHP中的$\u POST将没有任何数据可读取。相反，应该访问$HTTP\u RAW\u POST\u数据
因此，通过文件\获取\内容通过POST发送xml数据的代码如下：

<?php

function makeWebRequest()
{
    //URL where to send the data via POST
    $url = 'http://localhost/connect_to_gateway/receive.php';

    //the actual data
    $xml = '<?xml version="1.0" encoding="UTF-8"?>' .
            '<test>' .
                'Hi there!' .
            '</test>';

    //prepare the HTTP Headers
    $content_type = 'text/xml';
    // use key 'http' even if you send the request to https://...
    $options = array(
        'http' => array(
            'method'  => 'POST',
            'header'  => 'Content-type: ' . addslashes($content_type) .'\r\n'
                            . 'Content-Length: ' . strlen($xml) . '\r\n',
            'content' => $xml,
        ),
    );
    $context  = stream_context_create($options);

    /*send the data using a cURL-less method*/
    $result = file_get_contents($url, false, $context);
    echo 'file_get_contents<br/>';
    var_dump($result);
}

//call the function
makeWebRequest(); 
?>

if ($HTTP_RAW_POST_DATA)
{   
    //create an xml parser and attempt to read it outputting errors if any
    $xml_parser=xml_parser_create();
    if(!xml_parse_into_struct($xml_parser, $HTTP_RAW_POST_DATA, $vals, $index))
        var_dump(array("ERROR"=>sprintf("XML error: %s at line %d",xml_error_string(xml_get_error_code($xml_parser)),xml_get_current_line_number($xml_parser))));
}

谢谢大家。。呸。。那太痛苦了

<?php

function makeWebRequest()
{
    //URL where to send the data via POST
    $url = 'http://localhost/connect_to_gateway/receive.php';

    //the actual data
    $xml = '<?xml version="1.0" encoding="UTF-8"?>' .
            '<test>' .
                'Hi there!' .
            '</test>';

    //prepare the HTTP Headers
    $content_type = 'text/xml';
    // use key 'http' even if you send the request to https://...
    $options = array(
        'http' => array(
            'method'  => 'POST',
            'header'  => 'Content-type: ' . addslashes($content_type) .'\r\n'
                            . 'Content-Length: ' . strlen($xml) . '\r\n',
            'content' => $xml,
        ),
    );
    $context  = stream_context_create($options);

    /*send the data using a cURL-less method*/
    $result = file_get_contents($url, false, $context);
    echo 'file_get_contents<br/>';
    var_dump($result);
}

//call the function
makeWebRequest(); 
?>

if ($HTTP_RAW_POST_DATA)
{   
    //create an xml parser and attempt to read it outputting errors if any
    $xml_parser=xml_parser_create();
    if(!xml_parse_into_struct($xml_parser, $HTTP_RAW_POST_DATA, $vals, $index))
        var_dump(array("ERROR"=>sprintf("XML error: %s at line %d",xml_error_string(xml_get_error_code($xml_parser)),xml_get_current_line_number($xml_parser))));
}