PHP与MySQL

<?php//链接MySQL服务器$con = mysql_connect("localhost","root","");//判断是否链接上if (!$con){  die('Could not connect: ' . mysql_error());//未连接，直接停止}//选择数据库mysql_select_db("chunweitest");//执行查询语句$result = mysql_query("SELECT * FROM student");echo $result;//资源IDecho "<br/>";//fetch_array 逐行取出返回值while($row = mysql_fetch_array($result))  {  echo $row['stu_id'] . " " . $row['stu_name'] . " " . $row['stu_sex'];    echo "<br />";  }//关闭MqSQLmysql_close($con);?>