> 
> > Rumor has it that uploaded files are stored in memory before being 
> > committed
> > to disk. If so, the amount of free RAM available to PHP 
> would be the limit
> > to the filesize regardless of the ini file settings.
> 
> I don't think that is the case. File is written to temp 
> directory as it is 
> uploaded.
> And the qeustion is of php having negative values after I 
> specify post size 
> limit to 4G
> 

There is a comment in the documentation for move_uploaded_file() that
indicates the entire file is saved in memory prior to writing to the
temporary upload area.  Maybe this is not true. Read it for yourself. Its
just a comment, so who knows?

Also, there is an indication that you may need to tweak memory_limit in
php.ini.  


> > You should probably use another method of transport for 
> files that large.
> > FTP immediately comes to mind.
> 
> You mean ftp client? Like cute ftp. If yes, the problem is 
> that along with 
> uploading the file I also have to update database to 
> associate that file 
> with some user etc. It needs to be web based.
> 

After a quick search I found an applet that handles file uploads, and can
use FTP as the transport protocol.

http://radinks.com/upload/

JM

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