Regex for usernames in registration form.

[Nasr]

How do I exclude certain characters in usernames on registeration form? I want to prevent users from using numbers and english letters since my forum is in Arabic... how do i do that?

 

[Jake Bunce]

Admin CP -> Home -> Options -> Users and Registration -> User Name Match Regular Expression

This regex should do what you want. I tested it and it appears to work.

^[^a-zA-Z0-9]+$

 

[Nasr]

Thank you very much, Jake. I truely appreciate your help.

 

[Stuart Wright]

Could I also request some regext help please?
We need the opposite. Letters, numbers, spaces and dashes only.
Thanks

 

[Paul B]

^[a-zA-Z0-9 -]+$

 

[Stuart Wright]

Awesome, thanks Brogan

 

[Dimitrios]

Hi. I'm moving my forum from vB to Xenforo. Just finished the import and I need to set up things the way they were.

For usernames, I need to allow only greek letters and spaces. Meaning, lower case letters from α to ω, uppercase letters from Α to Ω and vowels bearing accents: άΆέΈήΉίϊΐΊΪόΌύϋΰΎΫώΏ

I have tried this expression:
^[α-ωΑ-ΩάΆέΈήΉίϊΐΊΪόΌύϋΰΎΫώΏ ]+$
in:
Admin CP -> Home -> Options -> Users and Registration -> User Name Match Regular Expression

but I get: Invalid regular expression

 

[Dimitrios]

Just for the record, it was the range that didn't seem to work properly. Having the letters one by one has worked for me:

/^[αβγδεζηθικλμνξοπρσςτυφχψωάέίϊΐήύϋΰόώΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩΆΈΊΪΉΎΫΌΏ ]+$/i