PHP/MYSQL显示数据库

Question

我该如何使这个显示最近的用户第一？

<?php 

$host="mysql13.000webhost.com"; // Host name 
$username="a2670376_Users"; // Mysql username 
$password="PASSWORD"; // Mysql password 
$db_name="a2670376_Pass"; // Database name 
$tbl_name="passes"; // Table name 

// Connect to server and select database. 
mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
mysql_select_db("$db_name")or die("cannot select DB"); 

// select record from mysql 
$sql="SELECT * FROM $tbl_name"; 
$result=mysql_query($sql); 
?> 
<table background='https://lh6.ggpht.com/DFABQFuYSXLBiB6qlvDPfOONOUxCiwM6_S- dHnjW82iognQToTkORsy7RVXsAz0Y23w=w705' width='50%'> 
<tr> 
<th align='left'>Submition</th><th align='center'>ScreenName</th><th  align='right'>Password</th> 
</tr> 
<tr> 
<th align='left'> 
<hr color='lime' width='100%'/> 
</th> 
<th align='center'> 
<hr color='lime' width='100%'/> 
</th> 
<th align='right'> 
<hr color='lime' width='100%'/> 
</th> 
</tr> 
<?php 
while($rows=mysql_fetch_array($result)){ 
?> 

<tr> 
<td background='transparent' align='left'><i><b><? echo $rows['id']; ?></b></i></td> 
<td background='transparent' align='center'><i><b><? echo $rows['username']; ?></b></i> </td> 
<td background='transparent' align='right'><i><b><? echo $rows['password']; ?></b></i> </td> 
</tr> 

<?php 
// close while loop 
} 
?> 

</table> 

<?php 
// close connection; 
mysql_close(); 
?> 
<center> 

所以，当这是在我的网站上跑了就说明它像这样

1 username password 

2 username password 

3 username password 

我想让它显示这样

3 username password 

2 username password 

1 username password 

最新的第一，我似乎无法想出来

请不要发布像使用mysqli或其不安全的东西我知道，我会解决它一旦我得到它的查询工作corectly

Answer 1

变化：

// select record from mysql 
$sql="SELECT * FROM $tbl_name order by id desc";