You mean "for" where you have "while". Simple debugging could have found this problem for you. After verifying that @files is set correctly, there are two possibilities: $ENV{DOCUMENT_ROOT} is not what you think it is or $_ is not what you think it is. Either step through your code in the debugger or insert debugging print statements; you will quickly discover $ENV{DOCUMENT_ROOT} to be correct, but some wacky value for $_. At this point, you know that while() is not setting $_ as you expected; either you decide perl is way to buggy and move on to PHP, C#, or the like, or you review the
fine manual and discover that while() loops until an expression is true, not loops over an array.
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