IndexAction::getNetworkList PHP Méthode

    public function getNetworkList()
    {
        $pid = intval($_REQUEST['pid']);
        $list = model('CategoryTree')->setTable('area')->getNetworkList($pid);
        $id = $pid + 100;
        // exit($list[$id]['child']);
        //dump($list[$id]['child']);
        exit(json_encode($list[$id]['child']));
    }