begin　　开始一个事务 rollback   事务回滚 commit    事务确认

set autocommit=0 禁止自动提交 set autocommit=1 开启自动提交

header("Content-type:text/html;charset=utf-8"); mysql_pconnect("localhost","root","") or die("数据库连接失败"); mysql_select_db("test"); mysql_query("set names utf8"); //开启一个事务 //mysql_query("BEGIN"); //mysql_query("START TRANSACTION"); //mysql_query("SET AUTOCOMMIT=1");//设置事务不自动提交 mysql默认是自动提交 mysql_query("SET AUTOCOMMIT=1");//开启事务 $sql1 = "INSERT INTO `test`values ('2222','测试数据')"; $sql2 = "INSERT INTO `test` values ('111','sss','22')";//特地写的错误 $res1 = mysql_query($sql1); $res2 = mysql_query($sql2); if($res1 && $res2) {     mysql_query("COMMIT");     echo "事务提交"; }else{     mysql_query("ROLLBACK");     echo "事务回滚"; } mysql_query("END");