How to Get the Uploaded File Information in the Receiving Script?

Question

I'm writing a PHP extension now in c/c++. User uploads a file (could be POST or PUT method, but I can limit it to POST only). I need to capture the file data while being uploaded, without writing it to disk on the server. I need to process the data and (maybe, depending on a situation) send it somewhere else or save it to disk.
Of course I know, that I can process the file after it has been uploaded (saved on disk on the server), but I would like to avoid it. I also need to do something opposite: I need to generate a file "on the fly" and send it
to the user. All metadata of the generated file is known beforehand (e.g. size, name).

I've been searching around for some time now and I could not find anything even close to the solution. Is there any example(s) or existing PHP extension that do(es) something like this (at least something simmilar) ? If you could give me any pointers that would be awesome.

Answer 1

PHP script can get the uploaded file information through the predefined array called $_FILES. Uploaded file information is organized in $_FILES as a two-dimensional array like:
$_FILES[$fieldName]['name'] - The Original file name on the browser system.
$_FILES[$fieldName]['type'] - The file type determined by the browser.
$_FILES[$fieldName]['size'] - The Number of bytes of the file content.
$_FILES[$fieldName]['tmp_name'] - The temporary filename of the file in which the uploaded file was stored on the server.
$_FILES[$fieldName]['error'] - The error code associated with this file upload.

The $fieldName is the name used in the < INPUT TYPE=FILE, NAME=fieldName>.

Answer 2

PHP script gets the information of uploaded file using a function $_FILES.
$_FILES[$controlName]['name'] - The Original name of file..
$_FILES[$controlName]['tmp_name'] - The temporary filename of the file in which the uploaded file was stored on the server.
$_FILES[$controlName]['type'] - The type of file uploaded.
$_FILES[$dontrolName]['size'] - The size or memory which that particular file is having.