php实现分页，上一页下一页

首先学东西  要多看手册
用php自带的函数  可以解决一些难解的问题

<?php

/**

 * Created by JetBrains PhpStorm.

 * User: Administrator

 * Date: 13-6-11

 * Time: 上午11:43

 * To change this template use File | Settings | File Templates.

 */

header("Content-type:text/html;charset=utf-8");

$array =array (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,20,21,22,23,24,25);

$page=$_GET['page']?(int)$_GET['page']:'0';

$size=5;

$pnum = ceil(count($array) / $size);

$newArray = array_slice($array,($page-1)*$size,$size);

foreach($newArray as $key=>$val)

{

    echo "<a href=\"array1.php?catid=$key.html\" target=\"_blank\">$val</a>\n";

}

echo "<br/><br/><br/><br/>";

echo "<a href=?>第一页</a>\n";

$str='';

for($i=1;$i<=$pnum-1;$i++)

{

 

   echo "<a href=\"?page=$i\" target=\"_blank\"";

   if($i==$page){echo "style='color:red;'";};

   echo ">$i</a>\n\n";

 

}

echo "<a href=?page=$pnum>最后一页</a>\n";

?>