OK so this quite a comfusing one lemme try set the situation:
I am trying to create a loop to define a string variable that will be used to specify the filename of a file for upload. In the script i'm using, the files in the form are specified as file_name; file2_name; file3_name etc etc to be able to upload multiple files. So the text i'm generating is file_name etc.
Take a look at my example code:


now the $whichfile variable is assigned: $file_name; $file2_name; $file3_name to be able to upload the 3 files one at a time (within the loop). My only problem is now when I try to see if the file exists IE if ($file_name) it check the contents of the $whichfile varaible instead of the contents of the contents of the $whichfile variable. In other words, if the content of $whichfile is "$file_upload", how do I use the "$file_upload" as a variable instead of string data?

IE if the contents of $whichfile is $file_name
and I say:
if ($whichfile)

I want it to check if $file_name exists and not $whicfile...
Any ideas is this even possible to fix...quite a mindjam.