All of that can be done in a regex: 
/\A\w{3,20}\z/

[download]
Will match only word sequences that are 3 to 20 characters long ONLY.

Yves / DeMerphq
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Writing a good benchmark isnt as easy as it might look.

In reply to Re: Re: Re: validation of posted data. by demerphq
in thread validation of posted data. by hostux

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