Possible Duplicate:
What is the best regular expression for validating email addresses?
I’ve been trying to do some regex for email filtering.
Allowed
anystring@example.com
any.string@example.com
a@example.com
Not allowed
any.st.ring@example.com
.a@example.com
a.@example.com
@example.com
This one accepts all allowed… but also a.@example.com
^([a-zA-Z0-9]+[\.]?){1,2}@([a-zA-Z0-9]+\.)+(com)$
This one accepts all allowed… except a@example.com!
Added [^\.] before @
^([a-zA-Z0-9]+[\.]?){1,2}[^\.]@([a-zA-Z0-9]+\.)+(com)$
What am I missing here?
^[a-zA-Z0-9]+(\.[a-zA-Z0-9]+)?@([a-zA-Z0-9]+\.)+com$will accept your ‘allowed’ emails and reject the others.Naturally, that will not match all generally valid emails. See http://www.regular-expressions.info/email.html for a discussion on email regular expressions.