The variable $HTTP_RAW_POST_DATA should be accessed even if PHP can recongize the CONTENT_TYPE.

I'm writing a program to emulate web client(in fact, it's an proxy, like CGIProxy). The enduser sends requests to the program, the program opens HTTP connection to target server and gets the response from the server. There is no problem if enduser use GET method, but if the method is POST and many FORM elements have same name, the big program is raised.