MySQL循环遍历执行查询SQL语句结果的方法

<?php
$conn=mysql_connect("localhost","root","") or die("数据库连接失败");
$set=mysql_select_db("a1202200719",$conn)or die("数据库为空");
mysql_query("SET NAMES `GBK`");
$sql="SELECT * FROM `msg`";
$query=mysql_query($sql);

while($row=mysql_fetch_array($query)){
<?php echo $row['id']?>
<?php echo $row['name']?>
<?php echo $row['content']?>
?>