Re: [tlug] Do you whitelist or blacklist utf-8? [SOLVED]

[Peter Brandt <me387511@example.com>]

Hi Dave

Dave M G wrote:
> TLUG,
> function hasOnlyWhitelistedCharacters($string)
> {
>     // return TRUE to say "only whitelisted characters"
>     return preg_match('/^[\p{L}\p{N}\p{Z}.@example.com/u', $string);
> }

Be careful with the "." in your Regexp. The "." matches *any* character, 
so the above function will return TRUE for any String that contains at 
least one character, whatever it is!

Use "\." instead of "." to match a real "period".

Peter