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Parsing form data

AndrewThomason
on
Medium Priority
168 Views
Last Modified: 2013-12-25
I have come across the following piece of code many times,when looking at CGI programs written in Perl. Can anyone explain to me exactly what is going on here?

$form_data =~ s/%([\dA-Fa-f][\dA-Fa-f])/pack ("C", hex ($1))/eg;

cheers
andy
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