<?php declare(strict_types=1); namespace SpomkyLabs\Pki\X501\StringPrep; use Normalizer; /** * Implements 'Normalize' step of the Internationalized String Preparation as specified by RFC 4518. * * @see https://tools.ietf.org/html/rfc4518#section-2.3 */ final class NormalizeStep implements PrepareStep { /** * @param string $string UTF-8 encoded string */ public function apply(string $string): string { return normalizer_normalize($string, Normalizer::NFKC); } }