Re: Re: eregi problem

Kim Madsen wrote:

-----Original Message----- From: andreja@beogradnet.com [mailto:andreja@beogradnet.com] Sent: Sunday, April 03, 2005 6:03 PM To: php-general@lists.php.net Subject: [PHP] Re: eregi problem i'm not familliar with regular expresions but i think that ^a-z - means that variable must start witx a-z characters you can chek it here: http://www.php.net/manual/en/reference.pcre.pattern.syntax.php

True, but look careful at what HE did:

if((eregi("[^a-zA-Z0-9]",$GP[sifre])

Putting the ^ _inside_ [] means NOT, so if any of the chars a-z0-9 is in the string it´s NOT matched. actually, that's not entirely correct. The regexp basically means that if there is any character in the string which is NOT alphanumeric, then it is matched. So basically it returns true if there is a non-alphanumeric char, and false otherwise. However, AFAIK the regexp should be delimited, since if it isn't it behaves "differently"... I just can't remember how differently it is exactly =/

Also there´s no idea in having a-zA-Z in the pattern since eregi() is case insensitive.