User Name RegEx

[Conner]

How would I limit users to only use characters a-z A-Z 0-9, "." and "-" and "_"?

[Floris]

This covers uppercase A to Z, lowercase a to z, and 0 to 9. Allows dot, dash and underscore.

^[A-Za-z0-9\.\-_]+$

[Conner]

Thank you very much. That was a pretty fast response.

[Floris]

You're welcome, have a great time with your vBulletin powered community.