[PHP] fdf and pfd functions in PHP

Okay, I'm trying to teach myself how to utilize fdf and insert into pdf and I have a question for y'all. When using pfd forms to submit to an fdf file, the php script uses the variable $HTTP_RAW_POST_DATA as the source to write to the fdf file. If I use an HTML form to do the same thing, what vari

[PHP] Uploading files

Okay, I'm absolutely certain that there's a simple solution to my problem, but my forehead is getting sore from banging it against the wall, so I thought I'd pick y'all's brains. I'm using a form to upload a number of files named $input_form_$i where $i is from 0 to 5 and the following is my cod