Re: [Phpgroupware-developers] what does this mean??

[Jason Wies]

Good explanation, I hadn't understood that before.

Now that we don't support PHP3 though, I would suggest using (bool) for 
clarity.  Personally I do away with the == True test as well, if ($rights & 
$required) works just as well in PHP3 as PHP4 and is clearer IMO.  But I think 
that is a personal style issue, not something we need to dictate (and I say 
that because it's Seek3r's code in question and if he dictated he might dictate 
the wrong way :-).

Jason Wies aka Zone

On Fri, Oct 11, 2002 at 08:41:26PM -0500, Michael Dean wrote:
> !! is a simple trick to force the result to a boolean.  The results of
> $rights & $required is not a boolean, but the result of a bitmask
> operation.  AFAIR, this is more significant in PHP3 than PHP4.  Run this
> script to see what I mean.  I refrained from testing with 1 and 1 since
> the full effect wouldn't be revealed.
> 
> On Fri, 2002-10-11 at 18:14, Chris Weiss wrote:
> > What is "!!"?  I only see reference to ! as NOT, and !! seems to be 
> > NOT(NOT) or
> > basically no change.