Posted by lorento on 02/16/07 10:35

$patterns = "/[^a-z0-9.-_]/i";
if (preg_match ($patterns, $word))
echo "not allowed";
else
echo "allowed";

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On Feb 16, 5:19 pm, raj <r...@nospam.com> wrote:
> Hi,
>
> Please can someone help regarding providing a regular expression for entering
> a set of characters with letters, numbers, periods (.), hyphens (-), or
> underscores (_) only.
>
> I've got as far as this:
>
> $pattern="^([_a-z0-9-]+)(\.[_a-z0-9-])$";
>
> Thank you in advance.
>
> Kind regards,
>
> Raj (newbie)

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