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Bug #14310 Uploaded empty files treated differently
Submitted: 2001-12-01 16:33 UTC Modified: 2001-12-01 16:56 UTC
From: a dot genkin at utoronto dot ca Assigned:
Status: Closed Package: HTTP related
PHP Version: 4.0.6 OS: Linux
Private report: No CVE-ID: None
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From: a dot genkin at utoronto dot ca
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 [2001-12-01 16:33 UTC] a dot genkin at utoronto dot ca 
When a zero-length file is uploaded, the temporary file is not
created, and the appropriate variable is set to 'none'.  This forces
me into all sorts of hacks in my php code (can't use
is_uploaded_file() and move_uploaded_file(), for instance), to give
empty files special treatment.

I think that *a file is a file*, and its size should not matter, as
long as it is within limits.

Many thanks,
-- 
Arcady Genkin

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 [2001-12-01 16:56 UTC] derick@php.net 
Fixed in CVS. You'll have to wait for version 4.2.0...

Derick
 [2002-04-25 17:06 UTC] dmitri at rm-f dot net 
Derick, I assume the change happened here:

http://cvs.php.net/diff.php/php4/main/rfc1867.c?r1=1.86&r2=1.87

Why is it an error to upload an empty file, though?

Thank you,
   Dmitri.
 [2002-04-25 17:43 UTC] dmitri at rm-f dot net 
After looking at HTTP traffic for file upload POST requests, I would like to retract my question -- it is impossible to distinguish between empty files and files that do not exist on the client machine.
 
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