问题描述
更新:
出于绝望，我在 shell 中执行了以下操作:
In a fit of desperation, I did the following in a shell:
REDIRECT_STATUS=true
SCRIPT_FILENAME=/var/www/...
REQUEST_METHOD=POST
GATEWAY_INTERFACE=CGI/1.1
export REDIRECT_STATUS
export SCRIPT_FILENAME
export REQUEST_METHOD
export GATEWAY_INTERFACE
echo "test=1" | php-cgi
...并且仍然没有 $_POST 变量出现在这个输出中:
...and STILL no $_POST variables are showing up in the output of this:
<?php var_dump($_POST); ?>
<小时>
我正在尝试创建一个与 php-cgi 二进制文件接口的小型网络服务器.然而，事情并没有那么顺利.php-cgi 二进制文件正确处理 GET 请求.当涉及 POST 请求时，$_POST 数组是空的，即使事情正在被 POST.
I am trying to create a small webserver that interfaces with the php-cgi binary. However, things aren't going so well. The php-cgi binary correctly handles GET requests. When it comes to POST requests, the $_POST array is empty, even when things are getting POSTed.
我检查了输入 php-cgi 二进制文件的 HTTP 标头，它们确实包含 POST 数据和 Content-type: application/x-www-form-urlencoded 标头.
I've checked the HTTP headers being fed into the php-cgi binary and they do indeed include the POST data and the Content-type: application/x-www-form-urlencoded header.
是什么让 php-cgi 二进制文件无法看到请求中包含 POST 数据?
What could be keeping the php-cgi binary from seeing that there's POST data included in the request?
我正在取得进展，我从 PHP 源代码:
I'm making progress, I've dug up some stuff from the PHP source code:
/sapi/cgi/cgi_main.c:
468: static int sapi_cgi_read_post(char *buffer, uint count_bytes TSRMLS_DC)
(我不知道从哪里调用这个函数.)
(I have no idea where this function is invoked from.)
阅读下面的答案后，我尝试了:
After reading the answer below, I tried:
<?php
var_dump($HTTP_RAW_POST_DATA);
?>
...产生输出:
NULL
...表示有更奇怪的东西在这里工作.
...indicating that something even stranger is at work here.
我越来越近了...我在 /main/php_content_types.c:
I'm getting closer... I found this function in /main/php_content_types.c:
SAPI_API SAPI_POST_READER_FUNC(php_default_post_reader)
SAPI_API SAPI_POST_READER_FUNC(php_default_post_reader)
...它似乎是处理 POST 请求的代码.
...and it seems to be the code that processes POST requests.
推荐答案
我终于想通了:
显然需要设置 CONTENT_LENGTH 环境变量.
Apparently the CONTENT_LENGTH environment variable needs to be set.
添加:
CONTENT_LENGTH=6
export CONTENT_LENGTH
我上面的例子使它正常工作！
to my example above causes it to work properly!
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