Email Regular Expression

[bosch]

Hi,

I have the following regular expression to validate email addresses:

\w+([-+.]\w+)*@\w+([-.]\w+)*\.(com|co\.uk|net|org|info|biz|org\.uk|tv|at|be|cc|ws|ltd\.uk|plc\.uk|ac\.uk)

It works fine for all email types listed in the above code apart from emails that end in '.org.uk'

Its because the org\.uk is being interpreted as a js command g\.

Does anyone know how to 'escape' this or any other technique that will allow the g to be interpreted as normal text?

Much appreciated.


__________________
Paul Gladwell
[email protected]

[Philip M]

I have not tried it but if you put the g into square brackets it ought to fix it. [] normally encloses a range, such as [a-z] but
it will doubtless work with one character.


\w+([-+.]\w+)*@\w+([-.]\w+)*\.(com|co\.uk|net|org|info|biz|or[g]\.uk|tv|at|be|cc|ws|ltd\.uk|plc\.uk|ac\.uk)

[bosch]

Thanks for the response but unfortunately that doesn't work.

[email protected] is still an invalid format.

[bosch]

The [g] doesn't work but any other letter will...

[bosch]

Its fixed now. It was nothing to do with the g being mis-interpreted. It was failing because the test |org| was before |org\.uk| so it only tested on the 'org' part of the email address.

I just moved the |org| test to the end.

[Philip M]

A tricky one!

[liorean]

A more general solution would be to use ^ and $ so designate start and end of string, respectively. If you do that, the order of the choices becomes indifferent.

How about national top domains? What if I have a .nu, .se, .de, .ru etc. email?