<?php

$password = '12345678';

var_dump(password_verify($password, '$2y$05$WjKwE1MiWPyPFghASGGcdupFqfcUHchkb2y/rwTiCWe40iIbqyxKq'));

var_dump(password_verify($password, password_hash($password, PASSWORD_DEFAULT, ['cost' => 5])));