Re: If statement w/ multiple conditions
| From: | ed at home dot homes2see dot com | Date: | Tue, 26 Nov 2002 13:08:29 +0000 |
| Subject: | Re: If statement w/ multiple conditions | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-126081@lists.php.net to get a copy of this message | ||
All four must be an empty string. I will be pulling the values from a
MySQL database. If these fields are empty I'll be prompting for
information. If any one of them contain anything I'll be showing it to
the user and asking if they want to change it.
Thanks,
Ed
On Tue, 26 Nov 2002, Ernest E Vogelsinger wrote:
> At 13:50 26.11.2002, ed@home.homes2see.com said:
> --------------------[snip]--------------------
> > I'll be trying to use a routine that checks 4 seperate variables for
> >content and need to know the easiest method to do so. The function works
> >on 2 conditions; either all the variables are empty and I do something or
> >I do something else.
> >
> >$lineone
> >$linetwo
> >$linethree
> >$linefour
> >
> > Would you use
> >
> >if ($lineone && $linetwo && $linethree && $linefour = "")
> --------------------[snip]--------------------
>
> Your expression yields true if 1-3 are not-empty AND four is an empty
> string. Not sure if that's what you want.
>
> All empty:
> !($lineone || $linetwo || $linethree || $linefour)
> --or--
> !$lineone && !$linetwo && !$linethree && !$linefour
>
> All set:
> $lineone && $linetwo && $linethree && $linefour
>
>
> --
> >O Ernest E. Vogelsinger
> (\) ICQ #13394035
> ^ http://www.vogelsinger.at/
>
>
>
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