php分页程序paginator程序代码

时间：2015-01-23 来源：西部数据作者：西部数据

<?php



class paginator {



    function __construct () {



    }



    static function render($page_type, array $args = array()) {

        $html = '';

        switch ($page_type)

        {

            case '1':

                $html =  page_1($channel_code, $page_num, $cur_page, $per_group, $base_url, $n, $v);

                break;

            case '2':

                $html =  fpage($row_num, $pagesize, $page, $url);

                break;

            case '3':

                break;



            default:

                $html = page($num, $perpage, $curpage, $mpurl, $hiddenFrom='');

        }



        return $html;

    }







    //函数1:根据总页数,当前页,和页分组及url产生分页导航

    function page_1($channel_code, $page_num, $cur_page, $per_group, $base_url, $n, $v) {

        // 分页函数参数列表(有多少页,当前页,每页多少个 ,链接地址)

        $base_url .= strpos($base_url, '?') ? '&' : '?';    //如果有?，则添加&,否则加？



        $page_val = "";



        if ($page_num < 1) {

            return $page_val; //如果小于1,返回空

        } elseif ($page_num == 1) {

            return $page_val = 1;   //如果等于1,返回1

        }



        //分组



        $group_ok = !(($page_num-1) % ($per_group-1));  //没有余数

        // 计算一共有多少组

        if($group_ok) {

            $group_num = ($page_num-1)/($per_group-1);

        }else {

            $group_num = ceil(($page_num-1) / ($per_group-1));

        } //判断当前页是否为一组的最后一个





        //组数

        $is_last_page = !(($cur_page-1) % ($per_group-1)); //计算当前在的组数

        if ($is_last_page) {

            $cur_group = ($cur_page-1) / ($per_group-1) + 1;

        } else {

            $cur_group = ceil(($cur_page-1) / ($per_group-1));

        }



        // 计算显示的起始页，这个关键

        $from = ($cur_group - 1) * ($per_group-1) + 1;

        $from = $cur_group <= 1 ? 1 :$from;



        $to = $from + $per_group;

        $to = $to > $page_num ? $page_num + 1 : $to;



        for($a = $from; $a < $to; $a++) {

            if ($a != $cur_page) {



                //不是当前页

                $page_val .= '<li><a href ="' . $base_url . 'channel='.$channel_code.'&n='.$n.'&v='.$v.'&page=' . $a . '">' . $a . '</a></li>';

            } else {

                //当前页

                $page_val .='<li class="current">'. $a .'</li>';

            }

        }



        //上一页下一页首页尾页

        $next = $cur_page + 1;    //当前页+1

        $prev = $cur_page-1;   //当前页-1



        if ($cur_page != $page_num) {

            //当前页不是最后一页

            $page_val .= '<span><a href ="' . $base_url . 'channel='.$channel_code.'&n='.$n.'&v='.$v.'&page=' . $next . '">' . '下一页' . '</a></span>';

            $page_val .= '<span><a href ="' . $base_url . 'channel='.$channel_code.'&n='.$n.'&v='.$v.'&page=' . $page_num . '">' . '>>' . '</a></span>'; //尾页



        }

        if ($cur_page != 1){



            //不是第一页,加上前面的内容

            $page_val = '<span><a href ="' . $base_url . 'channel='.$channel_code.'&n='.$n.'&v='.$v.'&page=' . $prev . '">' . '上一页' . '</a></span>' . $page_val;

            $page_val = '<span><a href ="' . $base_url . 'channel='.$channel_code.'&n='.$n.'&v='.$v.'&page=1">' . '<<' . '</a></span>' . $page_val; //首页



        }

        $page_val = '<ul class="page_nav">'.$page_val.'</ul>';





        return $page_val;

    }









    // 函数2：根据记录数，页列清数，当前页，url年成分页

    function fpage($row_num, $pagesize, $page, $url) {

        //$page,当前页;$row_num记录总数;$pagesize:每页记录数;$url记录页;

        //如果,如果有作数,则取加1

        $page_count = $row_num % $pagesize?intval($row_num / $pagesize) + 1:intval($row_num / $pagesize);



        if ($page_count == 1) {

            $page_string = "第一页|上一页|下一页|尾页";

        } else {

            //如果不止一页

            if ($page == 1) {

                //第一页显示

                $page_string = " <a href=" . $url . "?page=1>第一页 </a>|上一页| <a href=" . $url . "?page=" . ($page + 1) . ">下一页 </a>| <a href=" . $url . "?page=" . $page_count . ">尾页 </a>";

            }

            if (($page > 1) and ($page < $page_count)) {

                $page_string = " <a href=" . $url . "?page=1>第一页 </a>| <a href=" . $url . "?page=" . ($page-1) . ">上一页 </a>| <a href=" . $url . "?page=" .

                ($page + 1) . ">下一页 </a>| <a href=" . $url . "?page=" . $page_count . ">尾页 </a>";

            }

            if ($page == $page_count) {

                $page_string = " <a href=" . $url . "?page=1>第一页 </a>| <a href=" . $url . "?page=" . ($page-1) . ">上一页 </a>|下一页| <a href=" . $url . "?page=" . $page_count . ">尾页 </a>";

            }

        }

        $page_str = $page_string . ("," . $page . "/" . $page_count . "页");

        echo " <br> <p align=center>" . $page_str . " </p>";

    }





    /**

* 分页函数

*

* @param int $num:记录总数

* @param int $perpage:每页记录

* @param int $curpage:当前页

* @param string $mpurl:路径url

* @param unknown_type $hiddenFrom

* @return string

*/

    function page($num, $perpage, $curpage, $mpurl,$hiddenFrom='') {

        $multipage = '';

        //恢复

        $mpurl .= strpos($mpurl, '?') ? '&' : '?';



        if($num > $perpage) {

            $page = 10;

            $offset = 2;



            $pages = @ceil($num / $perpage);  //总页数



            if($page > $pages) {

                $from = 1;

                $to = $pages;

            } else {

                //如果总页数>10

                $from = $curpage - $offset;   //当前页-2

                $to = $from + $page - 1;    //当前页+10-3



                if($from < 1) {



                    $to = $curpage + 1 - $from;

                    $from = 1;

                    if($to - $from < $page) {

                        $to = $page;

                    }

                } elseif($to > $pages) {

                    $from = $pages - $page + 1;

                    $to = $pages;

                }

            }



            if ($hiddenFrom) {

                $multipage = ($curpage - $offset > 1 && $pages > $page ? '<a href="#" '.js_page($hiddenFrom,1).'>首页</a> ' : '').

                ($curpage > 1 ? ' <a href="#" '.js_page($hiddenFrom,$curpage - 1).'>‹‹上一页</a> ' : '');

                for($i = $from; $i <= $to; $i++) {

                    $multipage .= $i == $curpage ? '<span>'.$i.'</span> ' :

                    '<a href="#" '.js_page($hiddenFrom,$i).'>'.$i.'</a> ';

                }



                $multipage .= ($curpage < $pages ? '<a href="#" '.js_page($hiddenFrom,$curpage + 1).'>下一页››</a>' : '').

                ($to < $pages ? '<a href="#" '.js_page($hiddenFrom,$pages).'> 末页</a>' : '');

                $multipage = $multipage ? '<div class="list-page">'.$multipage.'</div>' : '';

            } else {



                $multipage = ($curpage - $offset > 1 && $pages > $page ? '<a href="'.$mpurl.'page=1">首页</a> ' : '').

                ($curpage > 1 ? ' <a href="'.$mpurl.'page='.($curpage - 1).'">‹‹上一页</a> ' : '');



                for($i = $from; $i <= $to; $i++) {

                    $multipage .= $i == $curpage ? '<span>'.$i.'</span> ' :

                    '<a href="'.$mpurl.'page='.$i.'">'.$i.'</a> ';

                }



                $multipage .= ($curpage < $pages ? '<a href="'.$mpurl.'page='.($curpage + 1).'">下一页››</a>' : '').

                ($to < $pages ? '<a href="'.$mpurl.'page='.$pages.'"> 末页</a>' : '');

                $multipage = $multipage ? '<div class="list-page">'.$multipage.'</div>' : '';

            }

        }

        return $multipage;

    }

    //暂不用

    function page_get_start($page, $ppp, $totalnum) {

        $totalpage = ceil($totalnum / $ppp);

        $page =  max(1, min($totalpage, intval($page)));

        return ($page - 1) * $ppp;

    }

    //暂不用

    function js_page($hiddenFrom,$page)

    {

        if ($hiddenFrom) {

            return ' onclick=javascript：$("#page").val("'.$page.'");$("#'.$hiddenFrom.'").submit(); ';

        }

    }

}

?>