<?php declare(strict_types=1); namespace SpomkyLabs\Pki\X501\StringPrep; /** * Interface for string preparation steps of Internationalized String Preparation algorithm specified by RFC 4518. * * @see https://tools.ietf.org/html/rfc4518#section-2 */ interface PrepareStep { /** * Apply string preparation step. * * @param string $string String to prepare * * @return string Prepared string */ public function apply(string $string): string; }