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Posted by Kimmo Laine on 11/06/06 07:16
"Geoff Muldoon" <geoff.muldoon@trap.gmail.com> wrote in message
news:MPG.1fb969feaad9fefe98987f@news.readfreenews.net...
> phil.latio@f-in-stupid.co.uk says...
>> I am trying to remember how you write an if statement to check if any
>> value
>> has been entered. For example seeing if a username has been entered in
>> form.
>> I have seen the following:
>>
>> if ($username == '')
>> {
>> print ("You've pressed submit without entering your username");
>> }
>>
>> However is there another method which uses an exclamation mark? I am sure
>> I
>> have seen something for where $username has no value but I can't think
>> what
>> it was.
>
> isSet ??
>
> if (!isSet($username)) { // do this if $username is not set
If this is form validation, then isset won't do any good. The form field
will be set, but it still may be empty. Better test that strlen() is greater
than zero, or use empty(). And Of course, there's always the $username vs.
$_POST['username'] issue. Seems like someone is using register_globals, for
shame...
--
"Ohjelmoija on organismi joka muuttaa kofeiinia koodiksi" - lpk
http://outolempi.net/ahdistus/ - Satunnaisesti pδivittyvδ nettisarjis
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