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Posted by Jerry Stuckle on 12/17/95 11:51
David Haynes wrote:
> Marcin Dobrucki wrote:
>
>> David Haynes wrote:
>>
>>> Ørjan Langbakk wrote:
>>
>>
>>>> See, I have, first, a check for existing email - if there is no
>>>> email present, I want it to check if there is a phonenumber entered,
>>>> and if _both_ those conditions are false, then I want to redirect.
>>>>
>>>> I do not wish to redirect after the first false, but after the second.
>>>>
>>>> Have I misunderstood something, or?
>>>>
>>> Isn't this just:
>>>
>>> if( ! email && ! phone ) redirect;
>>> if( email ) do_email
>>> else do_phone
>>
>>
>> if (!email || !phone) redirect;
>> // if you are here, all is ok.
>>
>> Redirect will happen only of both conditions fail. Ofcourse, it
>> does have a side-effect that if email is valid, phone will never be
>> checked because the condition for "if" will already satisfy.
>>
>> Ofcourse, it doesn't hurt to have a small "isset" test on the whole
>> thing, especially when we were talking about $_POST. If someone
>> accesses the page via GET, condition would fail, and under some
>> circumstances, just fall through.
>
>
> I don't see how 'if (!email || !phone) redirect;'
> handles this case:
>
> "if there is no email present, I want it to check if there is a
> phonenumber entered, and if _both_ those conditions are false,
> then I want to redirect."
>
> The || would say that you will redirect if *either* email or phone is
> not set.
>
> With my code, if both are not set, then the redirect occurs.
> If you continue past the if() then you know either email or phone (or
> both) is set.
> So you just take the action based upon that knowledge with a precedence
> given to the email.
>
> -david-
>
David,
If you want to redirect if both are invalid, just do:
if(!email && !phone)...
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================
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