Online PHP editor | refs for 6D9Pd

<?php class Users { public $listOfUsers = []; function add($stringOrArray): void { array_push($this->listOfUsers, ...(array)$stringOrArray); } } $users = new Users; $users->add('Terrell Irving'); $users->add(['Magdalen Sara Tanner', 'Chad Niles']); $users->add(['Mervin Spearing']); var_export($users->listOfUsers);