switch(值){ 开始case 值： 闭合break; }

　　　　　　　　　　switch ($goods['leixing']) {
                    case 1:
                        $data['type'] = 1;
                        $data['orderid'] = 'PT' . rand(000000, 999999) . time();
                        break;
                    case 2:
                        $data['type'] = 2;
                        $data['orderid'] = 'WP' . rand(000000, 999999) . time();
                        break;
                    case 3:
                        $data['type'] = 3;
                        $data['orderid'] = 'CT' . rand(000000, 999999) . time();
                        break;
                }