mysql_query 发送Select 语句

<?php
$serverLink=@mysql_connect("localhost","root","")or die("连接服务器失败！程序中断执行！");
mysql_query("set names 'gbk'");
$dbLink=@mysql_select_db("dedecmsv57") or die("选择当前数据库失败！程序中断执行！");
$selectSQL="select * from dede_flinktype";
$resultSet=mysql_query($selectSQL);
var_dump($resultSet);
echo "<br/>";
echo "student 表的记录数为：".mysql_num_rows($resultSet);
mysql_free_result($resultSet);
mysql_close($serverLink);

?>