PHP分页类

<?php

/* * *********************************************
 * @类名:   page
 * @参数:   $myde_total - 总记录数
 *          $myde_size - 一页显示的记录数
 *          $myde_page - 当前页
 *          $myde_url - 获取当前的url
 * @功能:   分页实现
 * @作者:   宋海阁
 */

class page {

    private $myde_total;          //总记录数
    private $myde_size;           //一页显示的记录数
    private $myde_page;           //当前页
    private $myde_page_count;     //总页数
    private $myde_i;              //起头页数
    private $myde_en;             //结尾页数
    private $myde_url;            //获取当前的url
    /*
     * $show_pages
     * 页面显示的格式，显示链接的页数为2*$show_pages+1。
     * 如$show_pages=2那么页面上显示就是[首页] [上页] 1 2 3 4 5 [下页] [尾页] 
     */
    private $show_pages;

    public function __construct($myde_total = 1, $myde_size = 1, $myde_page = 1, $myde_url, $show_pages = 2) {
        $this->myde_total = $this->numeric($myde_total);
        $this->myde_size = $this->numeric($myde_size);
        $this->myde_page = $this->numeric($myde_page);
        $this->myde_page_count = ceil($this->myde_total / $this->myde_size);
        $this->myde_url = $myde_url;
        if ($this->myde_total < 0)
            $this->myde_total = 0;
        if ($this->myde_page < 1)
            $this->myde_page = 1;
        if ($this->myde_page_count < 1)
            $this->myde_page_count = 1;
        if ($this->myde_page > $this->myde_page_count)
            $this->myde_page = $this->myde_page_count;
        $this->limit = ($this->myde_page - 1) * $this->myde_size;
        $this->myde_i = $this->myde_page - $show_pages;
        $this->myde_en = $this->myde_page + $show_pages;
        if ($this->myde_i < 1) {
            $this->myde_en = $this->myde_en + (1 - $this->myde_i);
            $this->myde_i = 1;
        }
        if ($this->myde_en > $this->myde_page_count) {
            $this->myde_i = $this->myde_i - ($this->myde_en - $this->myde_page_count);
            $this->myde_en = $this->myde_page_count;
        }
        if ($this->myde_i < 1)
            $this->myde_i = 1;
    }

    //检测是否为数字
    private function numeric($num) {
        if (strlen($num)) {
            if (!preg_match("/^[0-9]+$/", $num)) {
                $num = 1;
            } else {
                $num = substr($num, 0, 11);
            }
        } else {
            $num = 1;
        }
        return $num;
    }

    //地址替换
    private function page_replace($page) {
        return str_replace("{page}", $page, $this->myde_url);
    }

    //首页
    private function myde_home() {
        if ($this->myde_page != 1) {
            return "<a href=‘" . $this->page_replace(1) . "‘ title=‘首页‘>首页</a>";
        } else {
            return "<p>首页</p>";
        }
    }

    //上一页
    private function myde_prev() {
        if ($this->myde_page != 1) {
            return "<a href=‘" . $this->page_replace($this->myde_page - 1) . "‘ title=‘上一页‘>上一页</a>";
        } else {
            return "<p>上一页</p>";
        }
    }

    //下一页
    private function myde_next() {
        if ($this->myde_page != $this->myde_page_count) {
            return "<a href=‘" . $this->page_replace($this->myde_page + 1) . "‘ title=‘下一页‘>下一页</a>";
        } else {
            return"<p>下一页</p>";
        }
    }

    //尾页
    private function myde_last() {
        if ($this->myde_page != $this->myde_page_count) {
            return "<a href=‘" . $this->page_replace($this->myde_page_count) . "‘ title=‘尾页‘>尾页</a>";
        } else {
            return "<p>尾页</p>";
        }
    }

    //输出
    public function myde_write($id = ‘page‘) {
        $str = "<div id=" . $id . ">";
        $str.=$this->myde_home();
        $str.=$this->myde_prev();
        if ($this->myde_i > 1) {
            $str.="<p class=‘pageEllipsis‘>...</p>";
        }
        for ($i = $this->myde_i; $i <= $this->myde_en; $i++) {
            if ($i == $this->myde_page) {
                $str.="<a href=‘" . $this->page_replace($i) . "‘ title=‘第" . $i . "页‘ class=‘cur‘>$i</a>";
            } else {
                $str.="<a href=‘" . $this->page_replace($i) . "‘ title=‘第" . $i . "页‘>$i</a>";
            }
        }
        if ($this->myde_en < $this->myde_page_count) {
            $str.="<p class=‘pageEllipsis‘>...</p>";
        }
        $str.=$this->myde_next();
        $str.=$this->myde_last();
        $str.="<p class=‘pageRemark‘>共<b>" . $this->myde_page_count .
                "</b>页<b>" . $this->myde_total . "</b>条数据</p>";
        $str.="</div>";
        return $str;
    }

}

?>

<?php
$host="localhost";
$db_user="root";
$db_pass="root";
$db_name="demo";
$timezone="Asia/Shanghai";

$link=mysql_connect($host,$db_user,$db_pass);
mysql_select_db($db_name,$link);
mysql_query("SET names UTF8");

header("Content-Type: text/html; charset=utf-8");
?>

<?php
include_once("config.php");
require_once(‘page.class.php‘); //分页类
$showrow = 10; //一页显示的行数
$curpage = empty($_GET[‘page‘]) ? 1 : $_GET[‘page‘]; //当前的页,还应该处理非数字的情况
$url = "?page={page}"; //分页地址，如果有检索条件 ="?page={page}&q=".$_GET[‘q‘]
//省略了链接mysql的代码，测试时自行添加
$sql = "SELECT * FROM article";
$total = mysql_num_rows(mysql_query($sql)); //记录总条数
if (!empty($_GET[‘page‘]) && $total != 0 && $curpage > ceil($total / $showrow))
    $curpage = ceil($total_rows / $showrow); //当前页数大于最后页数，取最后一页
//获取数据
$sql .= " LIMIT " . ($curpage - 1) * $showrow . ",$showrow;";
$query = mysql_query($sql);
?>


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        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
        <title>演示：PHP简单漂亮的分页类</title>
        <meta name="keywords" content="php分页类" />
        <meta name="description" content="本文介绍一款原生的PHP分页类，分页样式有点类似bootstrap。" />
        <link rel="stylesheet" type="text/css" href="http://www.sucaihuo.com/jquery/css/common.css" />
        <style type="text/css">
            p{margin:0}
            #page{
                height:40px;
                padding:20px 0px;
            }
            #page a{
                display:block;
                float:left;
                margin-right:10px;
                padding:2px 12px;
                height:24px;
                border:1px #cccccc solid;
                background:#fff;
                text-decoration:none;
                color:#808080;
                font-size:12px;
                line-height:24px;
            }
            #page a:hover{
                color:#077ee3;
                border:1px #077ee3 solid;
            }
            #page a.cur{
                border:none;
                background:#077ee3;
                color:#fff;
            }
            #page p{
                float:left;
                padding:2px 12px;
                font-size:12px;
                height:24px;
                line-height:24px;
                color:#bbb;
                border:1px #ccc solid;
                background:#fcfcfc;
                margin-right:8px;

            }
            #page p.pageRemark{
                border-style:none;
                background:none;
                margin-right:0px;
                padding:4px 0px;
                color:#666;
            }
            #page p.pageRemark b{
                color:red;
            }
            #page p.pageEllipsis{
                border-style:none;
                background:none;
                padding:4px 0px;
                color:#808080;
            }
            .dates li {font-size: 14px;margin:20px 0}
            .dates li span{float:right}
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                <h2 class="title"><a href="http://www.sucaihuo.com/php/223.html">教程：PHP简单漂亮的分页类</a></h2>

                <div class="showData">

                    <ul class="dates">
                        <?php while ($row = mysql_fetch_array($query)) { ?>
                            <li>
                                <span><?php echo $row[‘addtime‘] ?></span>
                                <a target="_blank" href="http://www.sucaihuo.com/js"><?php echo $row[‘title‘] ?></a>
                            </li>
                        <?php } ?>
                    </ul>
                    <!--显示数据区-->
                </div>
                <div class="showPage">
                    <?php
                    if ($total > $showrow) {//总记录数大于每页显示数，显示分页
                        $page = new page($total, $showrow, $curpage, $url, 2);
                        echo $page->myde_write();
                    }
                    ?>
                </div>
            </div>
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