Brian Moon writes:
> I know it would confuse me to have 0009 turned into an octal or hex if I
> type cast it to (int). When I think of (int), I only think of their
> ultimate decimal value. Perhaps there needs to be a new type cast ((hex)?
> (oct)?) that will interpret variables in their hex or octal value. I know
> it is still a long integer in value, but it is a different representation of
> that number.
That's along the lines of what I was thinking--another cast (and
perhaps an optional arg to intval()?) which would respect the
base--maybe not separate (oct) or (hex)--or maybe so--or something
like (intbase) which just respected the base (since octal and hex are
the only ones strtol() claims to handle anyway). I admit that name is
clumsy at best. :) As it stands is_numeric('0x24') returns true but
intval('0x24') returns 0--which seems to conflict. Changing the
existing cast would probably surprise a lot of people though :).
> As for why it was that way to begin with, I am not sure. I could be that it
> would be too confusing like you say or that type casting was introduced
> before using hex or octal numbers was.
Ah, the world is so full of unanswered questions. :)
> Brian Moon
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>
> ----- Original Message -----
> From: "Lars Torben Wilson" <[EMAIL PROTECTED]>
> To: "Brian Moon" <[EMAIL PROTECTED]>
> Cc: <[EMAIL PROTECTED]>
> Sent: Monday, May 14, 2001 4:55 PM
> Subject: Re: [PHP-DEV] Integer casts broken or...?
>
>
> > Brian Moon writes:
> > > This is correct. The type casting converts the string into its integer
> > > value. If there is a non-numeric character in the string, it stops at
> that
> > > point. So "09" is 9 and "09t" is 9 but "0t9" is 0.
> > >
> > > Brian Moon
> >
> > Yeah, I know--it winds up being a strtol() call. However, since PHP
> > does interpret octal and hex integer literals, it seems odd that it
> > won't interpret them when encapsulated in strings. This does look
> > intentional though, since strtol() is called with a base of 10 in
> > zend_operators.c (line 259 in cvs); replacing it with a base of 0
> > gives the result I (personally) would have expected.
> >
> > So--is it intentional because it would screw some people up to have
> > left-zero-padded string numbers interpreted as octals, or is there
> > another deeper reason that using 0 as the base for strtol() is a bad
> > idea, or is this unintentional?
> >
> >
> > > ----- Original Message -----
> > > From: "Lars Torben Wilson" <[EMAIL PROTECTED]>
> > > To: <[EMAIL PROTECTED]>
> > > Sent: Monday, May 14, 2001 1:29 PM
> > > Subject: [PHP-DEV] Integer casts broken or...?
> > >
> > >
> > > >
> > > > Type casting to int from string works only for decimal values--is this
> > > > by design? Example:
> > > >
> > > > echo (int) '09' . ', ' . (int) '0x24';
> > > >
> > > > ...produces:
> > > >
> > > > 9, 0
> > > >
> > > > which seems intuitively wrong (I'd have expected 0, 36).
> > > >
> > > > Is this wrong, or should I just document it?
> > > >
> > > >
> > > > Thanks,
> > > >
> > > > Torben
> > > >
> > > > --
> > > > Torben Wilson <[EMAIL PROTECTED]>
> > > > http://www.thebuttlesschaps.com
> > > > +1.604.709.0506
> > > >
> > > >
> > > > --
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> > > >
> > > >
> > > >
> > >
> >
> > --
> > Torben Wilson <[EMAIL PROTECTED]>
> > http://www.thebuttlesschaps.com
> > +1.604.709.0506
> >
> >
> >
>
>
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--
Torben Wilson <[EMAIL PROTECTED]>
http://www.thebuttlesschaps.com
+1.604.709.0506
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