Tarefa Artisan para rodar o servidor de desenvolvimento PHP com Laravel

<?php

class Runserver_Task {

    public function run($arguments)
    {
        $port = !isset($arguments[0]) ? 8000: $arguments[0];
        echo 'Running PHP development server on port '.$port.'...';
        passthru('php -S localhost:'.$port.' -t '.getcwd().'/public');
    }
}
?>