Re: Verifying a certain amount of numbers

"Curt Zirzow" <curt@zirzow.dyndns.org> wrote in message news:20030716141706.GR50106@bagend.shire... > Excellent point! I find my self using regex's a bit to often when there > are other solutions available. > > btw, have you ever tested the difference between > > if(ereg('^[0-9]{6}$',$str)) > if(preg_grep('^[0-9]{6}$',$str)) > > I've been meaning to find out advantages/disadvantages with PERL vs. > POSIX compatible. Without getting too far astray from the real subject, I was once writing a script opening a textfile and modifying the whole contents to create a new file, using POSIX compatible expressions. My script timed out (30sec+) at some 400kb. I read Perl compatible was faster, and so I modified my script to use those. Result : done in a couple of secs. I bet it depends on the type of expression (these were a bunch of replaces) but for larger input or many iterations I'd rather use Perl compatible... -- [Win2000 | Apache/1.3.23] [PHP/4.2.3 | MySQL/3.23.53] Ivo Fokkema PHP & MySQL programmer Leiden University Medical Centre Netherlands