分页控件代码逻辑（JS版本&PHP版本）

    //total_page:总页数
    //boundary：页数临界值
    //front_range:前段显示页码数
    //mid_range:中段显示页码数
    //rear_range后段显示页码数
    //page_size：每页记录数
    var pagination_config = {total_page : 10,current_page:1, boundary : 7, front_range : 1, mid_range : 5,rear_range : 1,page_size:10};

    /**
     * 分頁格式處理，ex. prev 1 ... 8 9 10 11 12 ... 20 next
     * @return array 要顯示的頁碼
     */
    function pagintion_array()
    {
                var total_page = pagination_config.total_page,
                    boundary = pagination_config.boundary, 
                    front_range =  pagination_config.front_range, 
                    mid_range = pagination_config.mid_range,
                    rear_range = pagination_config.rear_range,
                    current_page = pagination_config.current_page;
        var pagintion = [];

        current_page = (current_page > total_page) ? total_page : current_page;

        // 總頁數小於頁數臨界值，則顯示所有頁碼
        if (total_page <= boundary) {
            for (i = 1; i <= total_page; i++) {
                pagintion.push(i);
            }
        } else {
            var front_end     = front_range; // 前段最後一個頁碼
            var mid_start     = current_page - Math.ceil(parseFloat(mid_range - 1) / 2); // 中段第一個頁碼
            var mid_end     = current_page + ((mid_range - 1) - Math.ceil((mid_range - 1) / 2)); // 中段最後一個頁碼
            var rear_start     = total_page - rear_range + 1; // 後段第一個頁碼
            // 中段第一個頁碼小於等於1，中斷頁碼往左位移
            while (mid_start <= 1) {
                if (mid_start < 1)
                    mid_end += 1;
                mid_start += 1;
            }

            // 中段第一個頁碼大於等於總頁數，中斷頁碼往右位移
            while (mid_end >= total_page) {
                if (mid_end > total_page)
                    mid_start -= 1;
                mid_end -= 1;
            }

            // 取出需要顯示的頁碼數
            for (var i = 1; i <= total_page; i++) {
                if (i <= front_end || (i >= mid_start && i <= mid_end) || i >= rear_start) {
                    if (i - pagintion[pagintion.length-1] > 1) {
                        pagintion.push(‘...‘);
                    }

                    pagintion.push(i);
                }
            }
        }

        return pagintion;
    }

    /**
     * 拼装分页的 html  ;
     * 样式 for jquery.simplepagination 
     * @return string
     */
    function create_html()
    {
                var current_page = pagination_config.current_page,
                    total_page = pagination_config.total_page;
                if(total_page<=1){
                    return;
                }
        var html = ‘<ul>‘;
        //计算总页数;
        //计算分页
        var pagintion = pagintion_array();

        //上一页
        //上一页 不可点击
        if (current_page <= 1) {
            html+=‘<li class="pg-prev pg-off"><a href=""><i></i>上一页</a></li>‘;
        } else {
            //上一页可点击
            var page_prev = current_page - 1;
            html+=‘<li class="pg-prev" data-page-index=‘+page_prev+‘><a href="javascript:void(0)"><i></i>上一页</a></li>‘;
        }

        //每一页的 链接
                for(var i=0;i<pagintion.length;i++){
                    var page_id =  pagintion[i];
                    if (page_id == current_page) {
                            html+=‘<li class="pg-on pg-index"  data-page-index=‘+page_id+‘><a href="javascript:void(0)" class="on">‘+page_id+‘</a></li>‘;
                    } else if (page_id == ‘...‘) {
                            html+=‘<li>...</li>‘;
                    } else {
                            html+=‘<li pg-index data-page-index=‘+page_id+‘><a href="javascript:void(0)">‘+page_id+‘</a></li>‘;
                    }
                }

        //下一页
        //下一页 不可点击
        if (current_page >= total_page) {
            html+=‘<li class="pg-next pg-off"><a href="javascript:void(0)">下一页</a></li>‘;
        } else {
            //下一页 可点击
            var page_next = current_page + 1;
            html+=‘<li class="pg-next" data-page-index=‘+page_next+‘><a href="javascript:void(0)">下一页</a></li>‘;
        }
                html+=‘<li class="pg-num-top">到第</li>‘;
                html+=‘<li class="pg-num"><input type="text" class="jump_index" ></li>‘;
                html+=‘<li class="pg-num-bot">页</li>‘;
                html+=‘<li class="pg-btn"><button class="btn_jump">确定</button></li>‘;
        html+=‘</ul>‘;
                $(‘.pagintion‘).children().remove();
        $(‘.pagintion‘).append(html);
                $(".pagintion").find(‘[data-page-index]‘).on("click",function(){
                    if($(this).data(‘page-index‘)!=pagination_config.current_page){
                        pagination_config.current_page = $(this).data(‘page-index‘);
                        //绑定列表
                        get_comment_list();
                    }
                })
    }

    }

<?php

/**
 * 分页类
 * @auth 
 * @date 2014-10-24
 */
class Pagination_lib
{

    /**
     * 参数设定 
     * @param int $current_page 當前頁數
     * @param int $total_page 總頁數
     * @param int $boundary 頁數臨界值
     * @param int $front_range 前段顯示頁碼數
     * @param int $mid_range 中段顯示頁碼數
     * @param int $rear_range 後段顯示頁碼數
     */
    public $current_page = 1;
    public $total_page     = 10;
    public $boundary     = 7;
    public $front_range     = 1;
    public $mid_range     = 5;
    public $rear_range     = 1;
    //每个页的链接 如: domain/list#page=
    public $page_url = ‘#page=‘;

    /**
     * 初始化设置 分页类 
     * @param type $config
     */
    function init($config = array())
    {
        if (count($config) > 0) {
            foreach ($config as $key => $val) {
                if (isset($this->$key)) {
                    $this->$key = $val;
                }
            }
        }
    }

    /**
     * 分頁格式處理，ex. prev 1 ... 8 9 10 11 12 ... 20 next
     *  copy from Store_lib.pagintion  , 从Store_lib中复制过来
     * @param int $current_page 當前頁數
     * @param int $total_page 總頁數
     * @param int $boundary 頁數臨界值
     * @param int $front_range 前段顯示頁碼數
     * @param int $mid_range 中段顯示頁碼數
     * @param int $rear_range 後段顯示頁碼數
     * @return array 要顯示的頁碼
     */
    public function pagintion_array($current_page = 1, $total_page = 10, $boundary = 7, $front_range = 1, $mid_range = 5,
                                 $rear_range = 1)
    {
        $pagintion = array();

        $current_page = ($current_page > $total_page) ? $total_page : $current_page;

        // 總頁數小於頁數臨界值，則顯示所有頁碼
        if ($total_page <= $boundary) {
            for ($i = 1; $i <= $total_page; $i++) {
                $pagintion[] = $i;
            }
        } else {
            $front_end     = $front_range; // 前段最後一個頁碼
            $mid_start     = $current_page - ceil(($mid_range - 1) / 2); // 中段第一個頁碼
            $mid_end     = $current_page + (($mid_range - 1) - ceil(($mid_range - 1) / 2)); // 中段最後一個頁碼
            $rear_start     = $total_page - $rear_range + 1; // 後段第一個頁碼
            // 中段第一個頁碼小於等於1，中斷頁碼往左位移
            while ($mid_start <= 1) {
                if ($mid_start < 1)
                    $mid_end += 1;
                $mid_start += 1;
            }

            // 中段第一個頁碼大於等於總頁數，中斷頁碼往右位移
            while ($mid_end >= $total_page) {
                if ($mid_end > $total_page)
                    $mid_start -= 1;
                $mid_end -= 1;
            }

            // 取出需要顯示的頁碼數
            for ($i = 1; $i <= $total_page; $i++) {
                if ($i <= $front_end || ($i >= $mid_start && $i <= $mid_end) || $i >= $rear_start) {
                    if ($i - (int) end($pagintion) > 1) {
                        $pagintion[] = ‘...‘;
                    }

                    $pagintion[] = $i;
                }
            }
        }

        return $pagintion;
    }

    /**
     * 拼装分页的 html  ;
     * 样式 for jquery.simplepagination 
     * @return string
     */
    function create_html()
    {
        $html = ‘<ul>‘;
        //计算总页数;
        //计算分页
        $pagintion = $this->pagintion_array($this->current_page, $this->total_page, $this->boundary, $this->front_range, $this->mid_range, $this->rear_range);

        //上一页
        //上一页 不可点击
        if ($this->current_page <= 1) {
            $html.=‘<li class="active"><span class="current prev" style="color: rgb(188, 188, 188); position: relative; width: 57px; background: rgb(255, 255, 255);"><span class="bg_prev" style="background-position: -78px -210px;"></span>上一页</span></li>‘;
        } else {
            //上一页可点击
            $page_prev = $this->current_page - 1;
            $html.=‘<li><a href="‘ . $this->page_url . $page_prev . ‘" class="page-link prev" url="‘ . $this->page_url . $page_prev . ‘" page="‘ . $page_prev . ‘" style="color: rgb(102, 102, 102); position: relative; background: rgb(255, 255, 255);"><span class="bg_prev" style="background-position: -99px -210px;"></span>上一页</a></li>‘;
        }

        //每一页的 链接
        foreach ($pagintion as $page_id) {
            if ($page_id == $this->current_page) {
                $html.=‘<li class="active"><span class="current">‘ . $page_id . ‘</span></li>‘;
            } elseif ($page_id == ‘...‘) {
                $html.=‘<li class="disabled"><span class="ellipse">…</span></li>‘;
            } else {
                $html.=‘<li><a href="‘ . $this->page_url . $page_id . ‘" class="page-link" page="‘ . $page_id . ‘">‘ . $page_id . ‘</a></li>‘;
            }
        }

        //下一页
        //下一页 不可点击
        if ($this->current_page >= $this->total_page) {
            $html.=‘<li class="active"><span class="current next" style="color: rgb(188, 188, 188); position: relative; background: rgb(255, 255, 255);"><span class="bg_next" style="background-position: -84px -210px;"></span>下一页</span></li>‘;
        } else {
            //下一页 可点击
            $page_next = $this->current_page + 1;
            $html.=‘<li><a href="‘ . $this->page_url . $page_next . ‘" class="page-link next" url="‘ . $this->page_url . $page_next . ‘" page="‘ . $page_next . ‘" style="color: rgb(102, 102, 102); position: relative; width: 57px; background: rgb(255, 255, 255);"><span class="bg_next" style="background-position: -104px -210px;"></span>下一页</a></li>‘;
        }
        $html.=‘</ul>‘;
        return $html;
    }

}