regexp problem

Hi I'm working on simple regexp that works fine with sed, but doesn't seem to work with PHP 4.0.3pl1. For example, I want to replace all occurances of the word "the" with "foo", so I use: cat file.txt | sed -e "s/\Wthe\W/ foo /g" and it works. Translating this into php would be: print (egrep_replace ("\Wthe\W", " foo ", $text)); but this just produces the original $text with nothing changed. What am I doing wrong? Many thanks, -- _____ _ _ _____ | __ | |___ ___| |_ ___| __|_ _ ___ Chris "Ng" Jones | __ -| | .'| _| '_|___|__ | | | | chris@black-sun.co.uk |_____|_|__,|___|_,_| |_____|___|_|_| www.black-sun.co.uk S o f t w a r e