- mb_strtoupper: documentation ( source)
- mb_strtolower: documentation ( source)
- preg_replace: documentation ( source)
<?php
echo preg_replace('/[^a-z0-9]+/u','-',preg_replace('/[\x{0300}-\x{036F}\x{1AB0}-\x{1AFF}\x{1DC0}-\x{1DFF}\x{20D0}-\x{20FF}\x{FE20}-\x{FE2F}]+/u','',mb_strtolower(mb_strtoupper(Normalizer::normalize("eradasdşğüğşşç.öç",Normalizer::FORM_KD)))));