Prevent special characters when registering an account

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Prevent special characters when registering an account

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08-08-2012, 03:43 PM

chefy

Join Date: Jul 2012

Posts: 88

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Prevent special characters when registering an account

I only want to allow the following characters for nicknames when someone is registering an account at register.php:

a ... z
A ... Z
0 ... 9
underscore "_"

How can I achieve this?

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