Perl find and replace in PHP

Hi All I am porting some perl to PHP and have struck a small snag. The perl script has quite a few substitutions that take place so data can be fed into a html page. The script uses the following perl syntax $html = cat search_results.html; $html =~ s/%Accom/$accom/g; As I understand perl that should cat the html file into a variable called $html. It should then perform a global substitution replacing %Accom with the contents of the variable $accom. Is such a thing possible in PHP? If so how? I have been doing google searches for a while and can find no simple explanation of how to perform this in PHP. The nearest I can find is using a preg_replace but I am unsure if that will do what I need. Does anyone know if this can be done? Regards Richard Luckhurst