Detailed explanation of Thinkphp transaction operation examples

//开启mysql事务操作
$model = M();
$model->startTrans();
$flag=false;
$deal1 = M('ppdd')->where(array('id'=>$data_P['id'],'zt'=>'0'))->save($data_arr);
$deal2 = M('tgbz')->where(array('id'=>$ppddxx['p_id']))->save(array('is_dakuan'=>1,'bj'=>'2','date_hk'=>date ( 'Y-m-d H:i:s', time ())));
$deal3 = M('jsbz')->where(array('id'=>$ppddxx['g_id']))->save(array('bj'=>'2'));
if($deal1 && $deal2 * $deal3){
 $flag=true;
}
if($flag){
 $model->commit();
}
else{
 $model->rollback();
 die("<script>alert(&#39;提交失败,请重新提交！&#39;);history.back(-1);</script>");
}