It looks like something lifted directly out of cgi-lib.pl, which is, well, ancient. It really looks like some beginner programmer wrote his own CGI parameter processing code, borrowing here and there... (And, haven't we all...) There really is no need to use pack "C", ... any more, as Perl 5, which has been around for more than 12 years, has chr. (Perl 4 did not.)

So: you might use this code to learn some Perl, but please don't copy it, as it can really not be considered "best practices" any more.

In reply to Re: A regexp from paypal by bart
in thread A regexp from paypal by davidov0009

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