RE: [PHP] Anyway of knowing whether a integer is odd or even

Why read more than one line? Here's what I do to change the background of odd/even rows of SQL resultset data displayed in an HTML table: (ceil($i % 2)>0) ? ($BGcolor=$oddRow) : ($BGcolor=$evenRow); Steve Orr -----Original Message----- From: J Smith [mailto:dark_panda@hushmail.com] Sent: Tuesday, October 09, 2001 2:18 PM To: php-general@lists.php.net Subject: Re: [PHP] Anyway of knowing whether a integer is odd or even Is if ($theInt & 1) really that much harder to read than if ($theInt % 2 > 0) ? And why wouldn't you want to get the most performance out of your code, regardless of the language, scripting or otherwise? Especially when it's a one or two character switch that makes the difference? I doubt that PHP should be classified as a scripting language any more than Perl is. Scripting languages are usually used to glue different applications together, like a shell script that uses awk and sed or whatever. PHP can be used to build applications, so it's more than a scripting language. Interpreted language is more like it. J David Otton wrote: > On Tue, 09 Oct 2001 13:07:17 -0400, you wrote: > >>It is generally faster > > (but harder to read) > >>to use bitwise operators... >> >>if ($theInt & 1) >> print "$theInt is odd"; >>else >> print "$theInt is even"; >> >>This is usually the case for most languages, like C or C++ or what have >>you. It's probably the same in PHP, since the & operator doesn't need to >>worry about returning the remainder, just the bits that are set in both >>$theInt and 1. > > I'm sure I don't want to get into this, but... > > If speed is that important, why would you use a scripting language? > > djo -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: php-general-unsubscribe@lists.php.net For additional commands, e-mail: php-general-help@lists.php.net To contact the list administrators, e-mail: php-list-admin@lists.php.net