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php validation(no spaces and special chr's)
Old 01-21-2010, 08:23 AM php validation(no spaces and special chr's)
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please i want to know how to make a validation using php in the way that only characters(A-Z, a-z) , number and _ are allowed to be used

special characters and spaces are not allowed (will return error message)


can anyone help me please
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Old 01-21-2010, 10:33 AM Re: php validation(no spaces and special chr's)
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http://php.net/manual/en/function.preg-match.php

the pattern will be '[_0-9a-zA-Z]'
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