[pmwiki-devel] Testing empty string (was:php logic question)

[Jiri Hladůvka / OBUTEX]

I tested an ampty string in PmWiki and found that

(:if "" :)
and
(:if !"" :)

are both TRUE

(:if equal !"" true:)
and
(:if equal !"" false:)

are both FALSE

see http://www.revida.sk/wiki/index.php/Test/8

Regars,
Jiri

christian.ridderstrom at gmail.com napsal(a):
> On Tue, 13 Mar 2007, Hans wrote:
>
>>>         if (!$page || !$permit)
>>
>>> Um... what exactly is '$page'?
>
>> $page is THE page, from
>> $page = RetrieveAuthPage($targetname, $FoxAuth, true);
>>
>> if no authorisation is given the var is empty, if authorised
>> $page is created as an array, and !$page is false.
>
> Ok. I was wondering if $page was a string, in which case I'm not sure 
> if something like
>
>     !""
>
> if true or false.
>
> /Christian
>
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