Allowing Slavic Latin characters

[Tipem]

Hi,

I have a function that checks to see if a string is an alphanumerical word character.

// allows a-z, A-Z, 0-9, _, and -
 
function wordchar($str)
{
	return (strspn($str, 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_-') == strlen($str));
}

However, when something such as "Ä" is passed through this function, it's accepted as an alphanumerical word character, even though it's not in the list of allowed characters.

Why is this? How can I fix this?

[crmalibu]

Are you sure that character is really an "Ä" at the time it's passed to that function? I'm thinking it's converted to something else.
Are you using mbstring.func_overload?