The regex for a syntactically valid email address is about a full screenfull. Ditto for a URL. And IP addresses are better checked algorithmically, not statically as text.

So what problem are you really solving, for which you got to the step "use a regex". Perhaps you should back up a step. {grin}

-- Randal L. Schwartz, Perl hacker

In reply to Re: Common RegExps by merlyn
in thread Common RegExps by Anonymous Monk

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