请教下这段代码哪出错了
<?php
$conn=mysql_connect("127.0.0.1",test,"rtest^");
mysql_select_db("mydb1");
$result = mysql_query("select * from news limit 1");
$num = mysql_num_fields($result);
for ($i=0;$i<=$num;$i++)
{
$name = mysql_field_name($result,$i);
print $name;
print '<br/>';
}
mysql_close($conn);
?>