Stefan Frömken wrote: > if($thisValue&pow(2,$c))... if $c >= 1 then I'd do something like $thisValue & (1 << ($c-1)) or (($thisValue >> ($c-1)) & 1) Bitwise shifting operators are a bit faster that pow() -- Jigal van Hemert skype:jigal.van.hemert msn: jigal at xs4all.nl http://twitter.com/jigalvh