PHP Help needed: Recognising an upload..

[Tristan Perry]

Hello all,
   This is what I'm working on at the moment:
http://tauonline.org/submit.php

If you look at the last 3 fields, there are 3 ways you can send your submission, and one is required:

• Upload a file
• Use a URL
• Put the content in the text box

The last 2 work, however I can't seem to recognise if someones uploading a file or not. With my last host, they had register globals turned on and so all I had to do was use something like:

if($file_upload != ''){ check it, upload it } etc

Although my new host has register globals turned off and so that doesn't work. How am I supposed to see if someone has uploaded a file? I've tried everything:

• if( isset($_FILES['upload']) )
• if( $_FILES['upload']['size'] != 0 )
• if( $_POST['upload'] )

etc but nothing seems to work. I'd appreciate any help with this.
  Thanks,
TauOnline.Org

P.s I know about 'is_uploaded_file()' but I also want to check that someone can't just put something like 'dajiosf' into the file upload box because 'is_uploaded_file()' wouldn't pick that up

[Tomer]

Well you can validate from a few angles, this covers the main ones.

Code Select Expand


<?php

// Variable storage from form.

$userfile = $HTTP_POST_FILES['userfile']['tmp_name'];

$userfile_size = $HTTP_POST_FILES['userfile']['size'];

// Few checks.

if ($userfile == "none")
   {
          echo "No file selected.";
   }

if ($userfile_size == "0")
   {
          echo "File size is 0; No file selected.";
   }

?>