求编程。解决方案

求编程。。。
现有用户名为root,密码为root的MYSQL数据库服务器，其中有个名为JWGL的数据库，如何使用PHP程序设计显示JWGL数据库中student表的前15条记录
------解决方案--------------------
mysql_connect('localhost', 'root', 'root') or die(mysql_error());
mysql_select_db('JWGL') or die(mysql_error());
$rs = mysql_query('select * from student limit 15') or die(mysql_error());
while($r = mysql_fetch_assoc($rs)) {
echo join(' ', $r) . '
';
}


------解决方案--------------------

mysql_connect('localhost', 'root', 'root') or die(mysql_error());

mysql_select_db('JWGL') or die(mysql_error());

//假设你的编号字段名为　id 

$rs = mysql_query('select * from student order by id desc limit 15') or die(mysql_error());

while($r = mysql_fetch_assoc($rs)) {

  echo join(' ', $r) . '
';

}

------解决方案--------------------

$mysql_server_name='localhost';

$mysql_username='root';

$mysql_password='root';

$mysql_database='JWGL';

$mysql_table='student';

$conn=mysql_connect($mysql_server_name,$mysql_username,$mysql_password,$mysql_database) or die(mysql_error());

mysql_select_db($mysql_database,$conn);

$sql='SET NAMES UTF8';//if utf8

mysql_query($sql);



$queStr ='SELECT * FROM '.$mysql_table.' ORDER BY id ASC LIMIT 0,15';//if pri key id

$result=mysql_query($queStr);

while($row = mysql_fetch_array($result)){

	echo $row[0]." ".$row[1]."
";//or $row["test_col"]

}

mysql_close($conn);

------解决方案--------------------
SELECT * FROM student limit 0,15