ThinkPHP实现事务回滚示例代码(附加：PDO的事务处理)

ThinkPHP的事务回滚示例如下：

$m=D('YourModel');//或者是M();
$m2=D('YouModel2');
$m->startTrans();//在第一个模型里启用就可以了，或者第二个也行
$result=$m->where('删除条件')->delete();
$result2=m2->where('删除条件')->delete();
if($result && $result2){
$m->commit();//成功则提交
}else{
$m->rollback();//不成功，则回滚
}

PDO的事务回滚处理：

$servername="localhost";
$username="root";
$password="admin";
$dbname="test";
try{
  $conn=new PDO("mysql:host=$servername;dbname=$dbname",$username,$password);
  $conn->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
  //开始事务
  $conn->beginTransaction();
  $conn->exec("INSERT INTO `hello`(`firstname`,`lastname`,`email`)VALUES('YE','XIAMING','yexianming@163.com')");
  $conn->exec("INSERT INTO `hello`(`firstname`,`lastname`,`email`)VALUES('YE','CONG','yecong@163.com')");
  $conn->exec("INSERT INTO `hello`(`firstname`,`lastname`,`email`)VALUES('FANG','MENG','fangmeng@168.com')");
  //提交事务
  $conn->commit();
  echo "New records created successfully!";
}catch(PDOException $e){
   //回滚事务
   $conn->rollBack();
   echo $sql."<br>".$e->getMessage();
}
$conn=NULL;