regex? ? ?

[IrYoKu]

I have seen the next code to validate an email:

eregi("^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,6}$", $email);

I have tried to read the man page that explains this... but I dont understand anything! 😕

From what I have read (and a bit of logic) I understand some things but if someone can explain me it from the beginning i will apreciate it.

Thanks

[Gary_King]

This will probably help you out:

http://www.phpbuilder.com/columns/dario19990616.php3

[HalfaBee]

Basically it goes like this

"^{[_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,6}$"}

^ = start of line

[\.0-9a-z-]+@ checks that there are only . - letters&numbers before the @

Then ([0-9a-z][0-9a-z-]+\.) checks that the domain starts with a number or letter and has numbers&letters and - followed by a . This can be repeated 1 or more times by the + sign.

[a-z]{2,6}$
checks for a 2 to 6 letter TLD at the end of the string.

For a fuller explanation of regex RTBM. 🙂 http://au2.php.net/manual/en/ref.pcre.php
This is more for preg_ functions but is pretty good for eregi, you just don't need the start/end char.

Hope this helps
HalfaBee

[IrYoKu]

Now I undestand it almost perfectly

Thank yoou!! 🙂