Other than substr

Hi all. I need to show up some data from a DB which consist of phone numbers with area code. They’re stored like (xxxx) xxxxxxxx. What is the best approach to print them into some textboxes so they can be edited? I’m using substr but area codes (inside parenthesis) goes from 3 to 5 numbers, so sometimes the closing parenthesis is showed and other times even the first number from the actual number is also showed. Can I use regex instead? How is it used? I tried to figure it out in the PHP manual, but it is NOT written in my level of English. Thanks in advance, <mailto:webmaster@icaam.com.ar> Cesar Aracena CE / MCSE+I Neuquen, Argentina +54.299.6356688 +54.299.4466621