Re: Mem and variables

> odd question, but if variables are stored in memory > until the script terminates, that includes old unused > variable, isn't it more efficient, memory wise, to > reuse old variables that reference, in effect the same > basic data, rather than create new or additional > variables The difference would only be measurable if you had a *LOT* of variables... Like, a whole lot. Also, PHP *may* (for all I know) have to do more "work" to execute: $string = substr($string, 0, 10); than: $foo = substr($string, 0, 10); Dunno if it helps or hurts or has no effect for PHP to have to worry about where the string is going after it does substr, but it *MIGHT*. At any rate -- The right way to worry about perforance is to figure out where your code is spending 90% of its time, and to optimize that. I'm betting it ain't in variable lookups for most of us :-) -- WARNING richard@zend.com address is an endangered species -- Use ceo@l-i-e.com Wanna help me out? Like Music? Buy a CD: http://l-i-e.com/artists.htm Volunteer a little time: http://chatmusic.com/volunteer.htm