I'm using this PHP function for SEO urls. It's working fine with Latin words, but my urls are on Cyrillic. This regex - /[^a-z0-9_\s-]/
is not working with Cyrillic chars, please help me to make it works with non-Latin chars.
function seoUrl($string) {
// Lower case everything
$string = strtolower($string);
// Make alphanumeric (removes all other characters)
$string = preg_replace('/[^a-z0-9_\s-]/', '', $string);
// Clean up multiple dashes or whitespaces
$string = preg_replace('/[\s-]+/', ' ', $string);
// Convert whitespaces and underscore to dash
$string = preg_replace('/[\s_]/', '-', $string);
return $string;
}