A little regex help?

[Ivan Marsh]

Man I suck at regex.

How do I write a regex that matches http://att.com and http://www.att.com
but doesn't match http://matt.com or http://www.bratt.com?

I'm trying to create a whitelist but I keep ending up with sites I don't
want matching my criteria.

I just can't seem to get my head around it.

Any help would be appreciated.

 

[Aaron]

Man I suck at regex.

How do I write a regex that matcheshttp://att.comandhttp://www.att.com
but doesn't matchhttp://matt.comorhttp://www.bratt.com?

I'm trying to create a whitelist but I keep ending up with sites I don't
want matching my criteria.

I just can't seem to get my head around it.

Any help would be appreciated.

check out the following site. It helped me out a lot.
http://www.anaesthetist.com/mnm/perl/regex.htm

 

[scripts.contact]

Man I suck at regex.

How do I write a regex that matches http://att.com and http://www.att.com
but doesn't match http://matt.com or http://www.bratt.com ?

/^http:\/\/(w{3}\.)?att\.com/i

 

[anthony]

/^http:\/\/(w{3}\.)?att\.com/i

I highly recommend the following app, it helped me a lot in allowing to
paste in text and then check regex expressions against the text quickly:

http://weitz.de/regex-coach/