User names

[Rizzo]

I am wanting to restrict usernames to letters, numbers, - _ is there anyway to do this?

[Steve Machol]

vBulletin Options > vBulletin Options > User Registration Options > Username Regular Expression: ^[A-Z0-9 ]+$

[Rizzo]

Ok i'm not quite sure how to write this, can you please help?

I want them to be able to use

a-z 0-9 ` ^ _ - [ ]

but that's all. i'm not quite sure how to write it.

[Rizzo]

Bump

[Steve Machol]

I do not know how to do that. You can review the regex documention here:

http://www.php.net/manual/en/reference.pcre.pattern.syntax.php

Perhaps you can find something to help you in that.