Frankly, I would be rather wary of using those. It's an unfortunate fact that 99% of cgi programs on the web roll their own parameter parsers, don't use strict, and so on. If one were to suggest a premade solution, make it from someone a with better coding habits. Heck, one might even learn some Perl in the process..
Update: Toned down the negativity about the above-mentioned URL, on the basis that there is a non-zero chance that at least one of them might be written correctly.
perl -pe '"I lo*`+$^X$\"$]!$/"=~m%(.*)%s;$_=$1;y^+*`^ ve^#$&V"+@( NO CARRIER'
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