RE: [PHP] Re: Difference between & &&

Where can I read more about this? I'm not sure that I understand why 4 & 4 == 4. -----Original Message----- From: Greg Beaver [mailto:greg@chiaraquartet.net] Sent: Friday, March 07, 2003 11:04 PM To: php-general@lists.php.net; James Taylor Subject: [PHP] Re: Difference between & && Hi James, & is a bit-wise AND. && is a logical AND. The bitwise AND will return a number, the logical AND will return true or false boolean values. It's a subtle distinction, but important. 4 & 4 == 4 4 && 4 == true == 1 Regards, Greg -- phpDocumentor http://www.phpdoc.org James Taylor wrote: > Ok, this may have already been posted to the list already, but the > archives don't seem to like the & and && characters. > > I'm running into some code that looks like this: > > <snip> > Define('INPUT', 2); > <snip> > if($search->level & INPUT) $tmp.= $search->input(); > > > Ok, what's the & mean? > > As far as I could tell from the very little documentation I was able > to scrape up on google, & is a bit-by-bit operator. Thus, if either > INPUT or $search->level, we get TRUE... If that's the case, what's the > point of using it instead of || ? > > Or, do I just totally not understand the point of this. Thanks > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php