1 <?php
2 class IndexAction extends Action {
3 private $d_user;
4 private $user;
5 private $arr;
6
7 public function __construct(){
8 parent::__construct();
9 $this->d_user = D('User');
10 $this->user = M('user');
11
12 //打款的配置信息
13 $this->arr = array(
14 'userA' => 1,
15 'userB' => 2,
16 'money' => 300
17 );
18 }
19
20 /**
21 * 打款逻辑（事务操作）
22 */
23 public function index(){
24 $this->user->startTrans();
25 $this->moneyFill($this->user, $this->arr['userA'], $this->arr['money']);
26
27 $data = array('id' => $this->arr['userA'], 'money' => array('exp','money - ' . $this->arr['money']));
28 $data2 = array('id' => $this->arr['userB'], 'money' => array('exp','money + ' . $this->arr['money']));
29
30 if($data = $this->d_user->lockTable($data)){
31 $res = $this->user->save($data);
32 }
33 if($data2 = $this->d_user->lockTable($data2)){
34 $res2 = $this->user->save($data2);
35 }
36
37 if($res && $res2){
38 $this->user->commit();
39 echo 'commit';
40 }else {
41 $this->user->rollback();
42 echo 'rollback';
43 }
44 }
45
46 /**
47 * 支出方金钱是否满足
48 */
49 private function moneyFill($user, $id, $money){
50 $current_money = $user->where(array('id' => $id))->getField('money');
51 if($current_money < $money){
52 echo 'money no worth!';
53 exit;
54 }
55 }
56 }
1 <?php
2 /**
3 * 用户表模型类
4 */
5 class UserModel extends AdvModel{
6
7 /**
8 * 乐观锁操作
9 */
10 public function lockTable($res){
11
12 //记录乐观锁
13 $res = $this->recordLockVersion($res);
14
15 //缓存当前线程的乐观锁
16 $this->cacheLockVersion($res);
17
18 //检查乐观锁并返回是否锁定
19 return $this->checkLockVersion($res, $options);
20 }
21 }
22 ?>
