Multilanguage validation with German "Umlaute"

That was not as hard as I thougt. I saw regex in the docs, regex but regex is regex...  

So my working solution is now:

PHP Code:

'surename'  => 'required|regex_match[/[a-zA-Z ÄäÖöÜüß]/]|min_length[2]', // instead alpha_space
'street_no' => 'required|regex_match[/[a-zA-Z0-9 ÄäÖöÜüß]/]|min_length[5]', // instead alpha_numeric_space 


Thank you and cheers - or "Prost" as we say