Posted by trlists on 10/20/17 11:13

On 15 Apr 2005 Tom Rogers wrote:

> BD> a. Must contain an 1 uppercase letter. [A-Z]
> BD> b. Must contain 1 digit. [0-9]
> BD> c. Must be a minimum of 7 characters in length. {7}
>
> BD> I'm not sure of how to build the correct syntax for using all 3
> BD> requirements together.

> easier done seperately I think
> if(
> strlen($text) > 6 &&
> preg_match('/\d+/',$text) &&
> preg_match('/[A-Z]+/',$text)
> ) { echo 'OK <br>';

To do it in one fell swoop you need to use lookahead assertions --
something like this:

if (preg_match('/(?=.*[A-Z])(?=.*[0-9]).{7,}/', $text))
echo 'Valid!';

I believe this matches for any string that has at least one uppercase
letter and one digit and is at least 7 characters long. However it
allows other characters as well (not just A-Z and 0-9). Lots of
possible variations there.

--
Tom

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