If the checkbox is not checked then it will not get posted to the query string. There will be no reference what-so-ever to the paramater (checkbox1 in this case). So the exists function mention below would probably be the easiest.

Maybe this is just with my server (Apache), but I dont think so.

In reply to RE: RE: Re: How to check value of checkbox on form submit? by perlmonkey
in thread How to check value of checkbox on form submit? by mt2k

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