PHP MySql paging example

<?php 
$num_rec_per_page=10;   // 每页显示数量
mysql_connect(&#39;localhost&#39;,&#39;root&#39;,&#39;&#39;);  // 数据库连接
mysql_select_db(&#39;apex1&#39;);  // 数据库名
if (isset($_GET["page"])) { 
$page  = $_GET["page"]; } 
else { $page=1; }; 
$start_from = ($page-1) * $num_rec_per_page;
 $sql = "SELECT * FROM student LIMIT $start_from, $num_rec_per_page";
  $rs_result = mysql_query ($sql); // 查询数据?> 
  <table><tr><td>Name</td><td>Phone</td></tr><?php 
while ($row = mysql_fetch_assoc($rs_result)) { ?> 
            <tr>
            <td><?php echo $row[&#39;Name&#39;]; ?></td>
            <td><?php echo $row[&#39;Phone&#39;]; ?></td>            
            </tr><?php 
}; ?> </table><?php 
$sql = "SELECT * FROM student"; $rs_result = mysql_query($sql); //查询数据
$total_records = mysql_num_rows($rs_result);  // 统计总共的记录条数
$total_pages = ceil($total_records / $num_rec_per_page);  // 计算总页数
echo "<a href=&#39;pagination.php?page=1&#39;>".&#39;|<&#39;."</a> "; // 第一页
for ($i=1; $i<=$total_pages; $i++) { 
            echo "<a href=&#39;pagination.php?page=".$i."&#39;>".$i."</a> "; }; 
            echo "<a href=&#39;pagination.php?page=$total_pages&#39;>".&#39;>|&#39;."</a> "; // 最后一页?>