You're right about the
open on the OUPUT filehandle. I think
we're both right on the first thing (param vs. upload), though. :)
As the CGI.pm docs say this:
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');
Calling param on an uploaded file field gives you a thing that's
both a string and a filehandle. Using upload just makes sure
you get a filehandle, as it's less of a security risk.
As to your question re: big uploads: do you get any out of memory
errors? 60-70k doesn't seem like *that* big a value. Could it be
a POST limitation?
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