PHP分页类

 
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<?php
/**
 * show(2)  1 ... 62 63 64 65 66 67 68 ... 150
 * 分页样式 
 * #page{font:12px/16px arial}
 * #page span{float:left;margin:0px 3px;}
 * #page a{float:left;margin:0 3px;border:1px solid #ddd;padding:3px 7px; text-decoration:none;color:#666}
 * #page a.now_page,#page a:hover{color:#fff;background:#05c}
 */

class Page
{
    public $first_row; //起始行数
    public $list_rows; //列表每页显示行数
    protected $total_pages; //总页数
    protected $total_rows; //总行数
    protected $now_page; //当前页数
    protected $method = 'defalut'; //处理情况 Ajax分页 Html分页(静态化时) 普通get方式
    protected $parameter = '';
    protected $page_name; //分页参数的名称
    protected $ajax_func_name;
    public $plus = 3; //分页偏移量
    protected $url;

    /**
     * Page::__construct()
     * 构造函数
     * @param mixed $total_rows 总数
     * @param mixed $list_rows  每页数
     * @param mixed $now_page   当前页:$_GET['p']
     * @param string $method    类型:default,html,ajax
     * @param string $parameter xxx.com/20-0-0-0-40-?.html替代?处
     * @param string $page_name 分页变量 p
     * @param string $ajax_func_name    ajax函数名称
     * @return void
     */
    public function __construct($total_rows, $list_rows, $now_page, $method = '', $parameter = '', $page_name = 'p', $ajax_func_name = '')
    {
        $this->total_rows = $total_rows;

        $this->parameter = !empty($parameter) ? $parameter : '';
        $this->list_rows = !empty($list_rows) && $list_rows <= 100 ? $list_rows : 15;
        $this->total_pages = ceil($this->total_rows / $this->list_rows);
        $this->page_name = !empty($page_name) ? $page_name : 'p';
        $this->ajax_func_name = !empty($ajax_func_name) ? $ajax_func_name : '';

        $this->method = !empty($method) ? $method : '';

        /* 当前页面 */
        if (!empty($now_page)) {
            $this->now_page = intval($now_page);
        } else {
            $this->now_page = !empty($_GET[$this->page_name]) ? intval($_GET[$this->page_name]) : 1;
        }
        $this->now_page = $this->now_page <= 0 ? 1 : $this->now_page;

        if (!empty($this->total_pages) && $this->now_page > $this->total_pages) {
            $this->now_page = $this->total_pages;
        }
        $this->first_row = $this->list_rows * ($this->now_page - 1);
    }

    /**
     * 得到当前连接
     * @param $page
     * @param $text
     * @return string
     */
    protected function _get_link($page, $text)
    {
        switch ($this->method) {
            case 'ajax':
                $parameter = '';
                if ($this->parameter) {
                    $parameter = ',' . $this->parameter;
                }
                return '<a onclick="' . $this->ajax_func_name . '(\'' . $page . '\'' . $parameter . ')" href="javascript:void(0)">' . $text . '</a>' . "\n";
                break;

            case 'html':
                $url = str_replace('?', $page, $this->parameter);
                return '<a href="' . $url . '">' . $text . '</a>' . "\n";
                break;

            default:
                return '<a href="' . $this->_get_url($page) . '">' . $text . '</a>' . "\n";
                break;
        }
    }

    /**
     * 设置当前页面链接
     */
    protected function _set_url()
    {
        $url = $_SERVER['REQUEST_URI'] . (strpos($_SERVER['REQUEST_URI'], '?') ? '' : "?") . $this->parameter;
        $parse = parse_url($url);
        if (isset($parse['query'])) {
            parse_str($parse['query'], $params);
            unset($params[$this->page_name]);
            $url = $parse['path'] . '?' . http_build_query($params);
        }
        if (!empty($params)) {
            $url .= '&';
        }
        $this->url = $url;
    }

    /**
     * 得到$page的url
     * @param $page 页面
     * @return string
     */
    protected function _get_url($page)
    {
        if ($this->url === null) {
            $this->_set_url();
        }
        //      $lable = strpos('&', $this->url) === FALSE ? '' : '&';
        return $this->url . $this->page_name . '=' . $page;
    }

    /**
     * 得到第一页
     * @return string
     */
    public function first_page($name = '第一页')
    {
        if ($this->now_page > 5) {
            return $this->_get_link('1', $name);
        }
        return '';
    }

    /**
     * 最后一页
     * @param $name
     * @return string
     */
    public function last_page($name = '最后一页')
    {
        if ($this->now_page < $this->total_pages - 5) {
            return $this->_get_link($this->total_pages, $name);
        }
        return '';
    }

    /**
     * 上一页
     * @return string
     */
    public function up_page($name = '上一页')
    {
        if ($this->now_page != 1) {
            return $this->_get_link($this->now_page - 1, $name);
        }
        return '';
    }

    /**
     * 下一页
     * @return string
     */
    public function down_page($name = '下一页')
    {
        if ($this->now_page < $this->total_pages) {
            return $this->_get_link($this->now_page + 1, $name);
        }
        return '';
    }

    /**
     * 分页样式输出
     * @param $param
     * @return string
     */
    public function show($param = 1)
    {
        if ($this->total_rows < 1) {
            return '';
        }

        $className = 'show_' . $param;

        $classNames = get_class_methods($this);

        if (in_array($className, $classNames)) {
            return $this->$className();
        }
        return '';
    }

    protected function show_2()
    {
        if ($this->total_pages != 1) {
            $return = '';
            $return .= $this->up_page('<');
            for ($i = 1; $i <= $this->total_pages; $i++) {
                if ($i == $this->now_page) {
                    $return .= "<a class='now_page'>$i</a>\n";
                } else {
                    if ($this->now_page - $i >= 4 && $i != 1) {
                        $return .= "<span class='pageMore'>...</span>\n";
                        $i = $this->now_page - 3;
                    } else {
                        if ($i >= $this->now_page + 5 && $i != $this->total_pages) {
                            $return .= "<span>...</span>\n";
                            $i = $this->total_pages;
                        }
                        $return .= $this->_get_link($i, $i) . "\n";
                    }
                }
            }
            $return .= $this->down_page('>');
            return $return;
        }
    }

    protected function show_1()
    {
        $plus = $this->plus;
        if ($plus + $this->now_page > $this->total_pages) {
            $begin = $this->total_pages - $plus * 2;
        } else {
            $begin = $this->now_page - $plus;
        }

        $begin = ($begin >= 1) ? $begin : 1;
        $return = '';
        $return .= $this->first_page();
        $return .= $this->up_page();
        for ($i = $begin; $i <= $begin + $plus * 2; $i++) {
            if ($i > $this->total_pages) {
                break;
            }
            if ($i == $this->now_page) {
                $return .= "<a class='now_page'>$i</a>\n";
            } else {
                $return .= $this->_get_link($i, $i) . "\n";
            }
        }
        $return .= $this->down_page();
        $return .= $this->last_page();
        return $return;
    }

    protected function show_3()
    {
        $plus = $this->plus;
        if ($plus + $this->now_page > $this->total_pages) {
            $begin = $this->total_pages - $plus * 2;
        } else {
            $begin = $this->now_page - $plus;
        }
        $begin = ($begin >= 1) ? $begin : 1;
        $return = '总计 ' . $this->total_rows . ' 个记录分为 ' . $this->total_pages . ' 页, 当前第 ' . $this->now_page . ' 页 ';
        $return .= ',每页 ';
        $return .= '<input type="text" value="' . $this->list_rows . '" id="pageSize" size="3"> ';
        $return .= $this->first_page() . "\n";
        $return .= $this->up_page() . "\n";
        $return .= $this->down_page() . "\n";
        $return .= $this->last_page() . "\n";
        $return .= '<select onchange="' . $this->ajax_func_name . '(this.value)" id="gotoPage">';

        for ($i = $begin; $i <= $begin + 10; $i++) {
            if ($i > $this->total_pages) {
                break;
            }
            if ($i == $this->now_page) {
                $return .= '<option selected="true" value="' . $i . '">' . $i . '</option>';
            } else {
                $return .= '<option value="' . $i . '">' . $i . '</option>';
            }
        }
        $return .= '</select>';
        return $return;
    }
}
?>
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本文固定链接: https://www.cxy163.net/archives/313 | 绝缘体

该日志由 绝缘体.. 于 2012年03月17日 发表在 PHP 分类下, 你可以发表评论,并在保留原文地址及作者的情况下引用到你的网站或博客。
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