www.gusucode.com > ROCBOSS微社区-微信论坛程序 v2.1PHP源码程序 > ROCBOSS微社区-微信论坛程序 v2.1/ROCBOSS_v2.1.0/ROCBOSS_v2.1.0/system/util/Page.php

    <?php
# 分页类

namespace system\util;

class Page
{
    public $first_row;
    
    public $list_rows;
    
    protected $total_pages;
    
    protected $total_rows;
    
    protected $now_page;
    
    protected $method = 'defalut';
    
    protected $parameter = '';
    
    protected $page_name;
    
    protected $ajax_func_name;
    
    public $plus = 3;
    
    protected $url;
    
    
    public function __construct($data = array())
    {
        $this->total_rows = $data['total_rows'];
        
        $this->parameter      = !empty($data['parameter']) ? $data['parameter'] : '';
        $this->list_rows      = !empty($data['list_rows']) && $data['list_rows'] <= 100 ? $data['list_rows'] : 15;
        $this->total_pages    = ceil($this->total_rows / $this->list_rows);
        $this->page_name      = !empty($data['page_name']) ? $data['page_name'] : 'p';
        $this->ajax_func_name = !empty($data['ajax_func_name']) ? $data['ajax_func_name'] : '';
        
        $this->method = !empty($data['method']) ? $data['method'] : '';
        
        
        if (!empty($data['now_page']))
        {
            $this->now_page = intval($data['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);
    }
    
    protected function _get_link($page, $text, $class = '')
    {
        switch ($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="' . $url . '" '.$class.'>' . $text . '</a>' . "\n";
                break;
            
            default:
                return '<a href="' . $this->_get_url($page) . '">' . $text . '</a>' . "\n";
                break;
        }
    }
    
    
    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;
    }
    
    protected function _get_url($page)
    {
        if ($this->url === NULL)
        {
            $this->_set_url();
        }
        return $this->url . $this->page_name . '=' . $page;
    }
    
    
    public function first_page($name = '第一页')
    {
        if ($this->now_page > 5)
        {
            return $this->_get_link('1', $name);
        }
        return '';
    }
    
    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 '';
    }
    
    public function up_page($name = '上一页')
    {
        if ($this->now_page != 1)
        {
            return $this->_get_link($this->now_page - 1, $name, 'class="up_page"');
        }
        return '';
    }
    
    public function down_page($name = '下一页')
    {
        if ($this->now_page < $this->total_pages)
        {
            return $this->_get_link($this->now_page + 1, $name, 'class="down_page"');
        }
        return '';
    }
    
    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;
    }
}
?>