thinkphp-ajax分页

<?php// +----------------------------------------------------------------------// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]// +----------------------------------------------------------------------// | Copyright (c) 2006-2013 http://thinkphp.cn All rights reserved.// +----------------------------------------------------------------------// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )// +----------------------------------------------------------------------// | Author: 麦当苗儿 <[e-mail]> <http://www.zjzit.cn>// +----------------------------------------------------------------------namespace Think;class AjaxPage{    public $firstRow; // 起始行数    public $listRows; // 列表每页显示行数    public $parameter; // 分页跳转时要带的参数    public $totalRows; // 总行数    public $totalPages; // 分页总页面数    public $rollPage   = 11;// 分页栏每页显示的页数public $lastSuffix = true; // 最后一页是否显示总页数    private $p       = 'p'; //分页参数名    private $url     = ''; //当前链接URL    private $nowPage = 1;// 分页显示定制    private $config  = array(        'header' => '<span class="rows">共 %TOTAL_ROW% 条记录</span>',        'prev'   => '<<',        'next'   => '>>',        'first'  => '1...',        'last'   => '...%TOTAL_PAGE%',        'theme'  => '%FIRST% %UP_PAGE% %LINK_PAGE% %DOWN_PAGE% %END%',    );    /**     * 架构函数     * @param array $totalRows  总的记录数     * @param array $listRows  每页显示记录数     * @param array $parameter  分页跳转的参数     */    public function __construct($totalRows, $listRows, $parameter = array()) {        C('VAR_PAGE') && $this->p = C('VAR_PAGE'); //设置分页参数名称        /* 基础设置 */        $this->totalRows  = $totalRows; //设置总记录数        $this->listRows   = $listRows;  //设置每页显示行数        $this->parameter  = empty($parameter) ? $_GET : $parameter;        $this->nowPage    = empty($_GET[$this->p]) ? 1 : intval($_GET[$this->p]);        $this->firstRow   = $this->listRows * ($this->nowPage - 1);    }    /**     * 定制分页链接设置     * @param string $name  设置名称     * @param string $value 设置值     */    public function setConfig($name,$value) {        if(isset($this->config[$name])) {            $this->config[$name] = $value;        }    }    /**     * 生成链接URL     * @param  integer $page 页码     * @return string     */    private function url($page){        return str_replace(urlencode('[PAGE]'), $page, $this->url);    }    /**     * 组装分页链接     * @return string     */    public function show($c=CONTROLLER_NAME,$a=ACTION_NAME) {        if(0 == $this->totalRows) return '';        /* 生成URL */        $this->parameter[$this->p] = '[PAGE]';        $this->url = U($c.'/'.$a, $this->parameter);        /* 计算分页信息 */        $this->totalPages = ceil($this->totalRows / $this->listRows); //总页数        if(!empty($this->totalPages) && $this->nowPage > $this->totalPages) {            $this->nowPage = $this->totalPages;        }        /* 计算分页零时变量 */        $now_cool_page      = $this->rollPage/2;$now_cool_page_ceil = ceil($now_cool_page);$this->lastSuffix && $this->config['last'] = $this->totalPages;        //上一页        $up_row  = $this->nowPage - 1;        $up_page = $up_row > 0 ? '<a class="prev" href="javascript:void(0)" title="' . $up_row . '">' . $this->config['prev'] . '</a>' : '';        //下一页        $down_row  = $this->nowPage + 1;        $down_page = ($down_row <= $this->totalPages) ? '<a class="next" href="javascript:void(0)" title="' . $down_row . '">' . $this->config['next'] . '</a>' : '';        //第一页        $the_first = '';        if($this->totalPages > $this->rollPage && ($this->nowPage - $now_cool_page) >= 1){            $the_first = '<a class="first" href="javascript:void(0)" title="' . 1 . '">' . $this->config['first'] . '</a>';        }        //最后一页        $the_end = '';        if($this->totalPages > $this->rollPage && ($this->nowPage + $now_cool_page) < $this->totalPages){            $the_end = '<a class="end" href="javascript:void(0)" title="' . $this->totalPages . '">' . $this->config['last'] . '</a>';        }        //数字连接        $link_page = "";        for($i = 1; $i <= $this->rollPage; $i++){if(($this->nowPage - $now_cool_page) <= 0 ){$page = $i;}elseif(($this->nowPage + $now_cool_page - 1) >= $this->totalPages){$page = $this->totalPages - $this->rollPage + $i;}else{$page = $this->nowPage - $now_cool_page_ceil + $i;}            if($page > 0 && $page != $this->nowPage){                if($page <= $this->totalPages){                    $link_page .= '<a class="num" href="javascript:void(0)" title="' . $page . '">' . $page . '</a>';                }else{                    break;                }            }else{                if($page > 0 && $this->totalPages != 1){                    $link_page .= '<span class="current">' . $page . '</span>';                }            }        }        //替换分页内容        $page_str = str_replace(            array('%HEADER%', '%NOW_PAGE%', '%UP_PAGE%', '%DOWN_PAGE%', '%FIRST%', '%LINK_PAGE%', '%END%', '%TOTAL_ROW%', '%TOTAL_PAGE%'),            array($this->config['header'], $this->nowPage, $up_page, $down_page, $the_first, $link_page, $the_end, $this->totalRows, $this->totalPages),            $this->config['theme']);        return "<div>{$page_str}</div>";    }}