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How do you check for more than 1 letter for a variable?

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05-19-2010, 02:53 PM

Boofo

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How do you check for more than 1 letter for a variable?

How do you check to make sure that a variable only allows 1 letter or number? Here is the variable I am using in the php file:

Code:

$vbulletin->GPC['letter']

I want to do a check to make sure only one letter or number is entered. Right now you can enter anything for it.

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