I suspect that for whatever you are doing, you would be better off splitting first or better yet using a CSV module (like Text::CSV), but it's fairly trivial to check with:

/(?:^|,)value1(?:,|$)/

where I've used non-capturing groups with alternators to make it insensitive to whether it is next to commas or the start/end of the list. See perlretut.

In reply to Re: reg exp to find presence of value in a list of comma seperated list by kennethk
in thread reg exp to find presence of value in a list of comma seperated list by kgforperl

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