protected static function getIns()
{
if (!self::$ins instanceof self) {
self::$ins = new self();
}
return self::$ins;
}
<?php
/***
file .php
***/
define('AICN', true);
require './include/init.php';
$act = isset($_GET['car']) ? $_GET['car'] : 'buy';
$uscart = carttool::getcart();
if (!isset($uscart)) {
echo '';
}
$goods = new goodsmodel();
if ($act == 'buy') {
$goods_id = isset($_POST['goods_id']) ? $_POST['goods_id'] + 0 : 0;
$num = isset($_GET['num']) ? $_GET['num'] + 0 : 1;
if ($goods_id) {
$gods = $goods->find($goods_id);
if (!empty($gods)) {
//print_r($gods);
if ($gods['is_delete'] == 1 || $gods['is_sale'] == 0) {
$msg = '此商品已下架不能购买';
include ROOT . 'view/front/msg.html';
exit;
}
$uscart->additem($goods_id, $gods['goods_name'], $gods['shop_price'], $num);
$items = $uscart->all();
print_r($items);
if ($items[$goods_id]['num'] > $gods['goods_number']) {
$uscart->decnum($goods_id, $num);
$msg = '此商品库存不足';