How exactly is PHP creating superglobal $_POST, $_GET, $_COOKIE and $_REQUEST?

Question

I\'m sorry for confusing title of the question, I\'ll try to clarify what the issue is.

I\'m doing some work with Mongrel2 server and I\'m writing a PHP handler that has

Answer 1

I am trying to contribute to this question with the knowledge I know.

Sending a HTTP Request with such headers can duplicate POST variable

POST /somepage.php HTTP/1.1
Host: www.domain.com
User-Agent: Mozilla/12.0
Content-Length: 31
Content-Type: application/x-www-form-urlencoded

parameter=value&testcode=value1

Also you might want to check the HttpRequest libray of PHP. [Start here]. For POST data you can override the previous POST content using HttpRequest::setPostFields() and set your own data for it.

HttpRequest::setPostFields(array(
    "parameter" => "value"
));