See the CGI modle documentation.
To be safe, use the upload() function (new in version 2.47). When called with the name of an upload field, upload() returns a filehandle, or undef if the parameter is not a valid filehandle. 
$fh = $query->upload('uploaded_file');

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In reply to Re: handling file uploads. by lhoward
in thread handling file uploads. by Punto

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