epochonaut

I was looking for some email validation scripts and came across this:

-------------------------------
var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i

function checkmail(e){
var returnval=emailfilter.test(e);
return returnval;
}
-------------------------------

It works but I've never seen anything like that first line before. What is it called so I can learn more about it?

jimbo

This is regular expression....

As i'm not the best to explain you what it does in details, I can take you on this site where you'll find some regexp: Regular Expression Library

I also recommend this site:
Zend Developer Zone | PHP 101 (part 13): The Trashman Cometh - Part 2

I'm on this complete tutorial by now, learning some PHP 5 new concept (objetcs, classes, etc.)... At this place you'll fin a beginning of what you're looking for...

ENJOY!


ps: this one should be great too: PHP: Regular Expression Functions (POSIX Extended) - Manual