Fact is, using isset() with multiple arguments is much more necessary in
real world than other is_*() functions. isset() is very often used to
validate user input.
Zeev
At 23:27 19/3/2001, Chris Newbill wrote:
>I agree Phil, that is the mature way to examine this.
>
>Except, I would be surprised if we _cannot_ apply the same reasoning to the
>other is_* functions, it's the exact same concept. I'm just not familiar
>enough with the internal workings to conclude whether is_*($x, $y, $z) would
>be efficient or even used for that matter.
>
>Although I might consider using it like if (isSet($a, $b) && is_int($a,
>$b)).
>
>-Chris
>
> > -----Original Message-----
> > From: Phil Driscoll [mailto:[EMAIL PROTECTED]]
> > Sent: Monday, 19 March, 2001 2-11 pM
> > To: Chris Newbill; Zeev Suraski; Andi Gutmans; [EMAIL PROTECTED]
> > Cc: PHP DEV
> > Subject: Re: [PHP-DEV] feature request
> >
> >
> > Andi said:
> >
> > >isset() is not an internal function but a language construct. I
> > disagree on
> > >the "using additional arguments for other stuff part". It's often very
> > >weird that functions behave differently according to the way they are
> > >called
> >
> > I've just done a quick count of the php functions which take an optional
> > extra argument to change their behaviour, and I stopped when I
> > reached 100.
> >
> > Fair enough, isset is a language construct, but most of the other
> > isblahs/ext_isblahs are functions, however your average php
> > programmer won't
> > even know what this means, let alone be able to discriminate.
> >
> > My point is that if you are going to do it to isset, AND the
> > language is to
> > become more orthogonal then it MUST also be done to isanythingelse. I can
> > see that there are no nasty repercussions with using the technique for
> > isset, however there are many many isanythingelses and I'd be surprised if
> > we can apply the
> > reasoning across the board.
> >
> > I don't want to stifle innovation here, I just want us to think beyond the
> > immediate problem when the language gets extended.
> >
> > Cheers
> > --
> > Phil Driscoll
> > Dial Solutions
> > +44 (0)113 294 5112
> > http://www.dialsolutions.com
> > http://www.dtonline.org
> >
> >
--
Zeev Suraski <[EMAIL PROTECTED]>
CTO & co-founder, Zend Technologies Ltd. http://www.zend.com/
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