mysqli多条sql语句查询

<?php 
$mysqli = new mysqli("localhost","root","","new");
$mysqli->query("set names 'utf8");
//多条sql语句
$sql = "select id,name from `user`;";
$sql .= "select id,mail from `user`";
echo $sql;
if ($mysqli->multi_query($sql)){//multi_query()执行一条或多条sql语句
	do{
	if ($rs = $mysqli->store_result()){//store_result()方法获取第一条sql语句查询结果
	while ($row=$rs->fetch_row()){
	var_dump($row);
	echo "<br>";
	}
	$rs->Close(); //关闭结果集
	if ($mysqli->more_results()){ //判断是否还有更多结果集
	echo "<hr>";
	}
	}
	}while($mysqli->next_result());//next_result()方法获取下一结果集，返回bool值
}
$mysqli->close(); //关闭数据库连接
?>