screen/commands/mobile_import.php

<?php

use Workerman\Lib\Timer;
use Workerman\Worker as WO;

class MobileImportWork extends Com{
    public static function run(){
        $work=self::newWorker();
        $work->onWorkerStart=function (WO $worker){
            Timer::add(3,function ()use ($worker){
                self::import();
            });
        };
    }
    public static function import(){
        throw_user('aaaa');
    }
}
MobileImportWork::run();