php訪問資料庫分頁顯示
阿新 • • 發佈：2019-02-07
1、前言
對於mysql資料庫，為便於學習等，新安裝的mysql中含有一個叫做world的資料庫，該資料庫含有一些資訊，本文以此為實驗素材。本文參考了php經典程式設計265例。
2、上程式碼
<?php class mysql{ var $host; var $user; var $pwd; var $db; var $con; function __construct($host, $user, $pwd, $db){ $this->host=$host; $this->user=$user; $this->pwd=$pwd; $this->db=$db; $this->connect(); } function connect(){ $this->con=mysql_connect($this->host,$this->user,$this->pwd); mysql_select_db($this->db,$this->con); mysql_query("SET NAMES UTF-8"); } }; ?>
<html> <head> <style> td{ text-align:center; } </style> </head> <body> <table width="500px" border="1px" cellpadding="1px" cellspacing="1px" align="center"> <caption>CountryLauguage</caption> <tr> <td width="100px">CountryCode</td><td width="200px">Language</td><td width="100px">Isofficial</td><td width="100px">Percentage</td> </tr> <?php include("in.php"); new mysql("localhost","root","08246298","world"); $res=mysql_query("select * from countrylanguage"); $sum=mysql_num_rows($res); $perpage=50; $pagesum=ceil($sum/$perpage); if(empty($_GET['page'])) { $page=1; } else { $page=$_GET['page']; } $start=($page-1)*$perpage+1; $res=mysql_query("select * from countrylanguage limit ".$start.",".$perpage); while($r=mysql_fetch_row($res)) { echo "<tr>"; echo "<td width='100px'>$r[0]</td><td width='200px'>$r[1]</td><td width='100px'>$r[2]</td><td width='100px'>$r[3]</td>"; echo "</tr>"; } ?> </table> <br/> <p align="center"> <?php echo "<a href='index.php?page=1'>Head</a> "; if($page>2) { echo "<a href='index.php?page=".($page-1)."'>Pre</a> "; } if($page<$pagesum-1) { echo "<a href='index.php?page=".($page+1)."'>Next</a> "; } echo "<a href='index.php?page=".$pagesum."'>End</a> "; ?> </p> </body> </html>
