Monks

I am trying to check the following input for nasties, and to make sure users have not entered things incorrectly (i.e a \ in your name).

Fullname = Upper/Lower Case, Spaces, Min 1, Max 30, '`-
Username = Lower Case Only, Start With Char, Numbers, Min 3, Max 16, -_.
Password = Min 6, Max 30>br>

I am currently doing it like this: 
if ($sup_fullname !~ /^[-.\w\s]{1,30}$/) {
        $message = $message.'<p>Full Name Error: 1-30 Chars, No Symbol
+s.</p>';
        $found_err = 1; }

[download]
Is There a better way? Or could someone give me some good regexps? My code is running in taint, and i understand this traps some nasties?

In reply to Reasonable RegExps by Anonymous Monk

Title:
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