Page.class.php

<?php
/**
 * author: gool
 **/

//分页信息类，移植自C#
class BasePage {
    
    ///当前页号
    private $pageIndex = 1;
    ///每页显示数量
    private $pageSize = 1;
    ///显示页标数
    private $pageLabelCount = 4;
    ///总数量
    private $totalCount = 1;
    ///当前页列表
    private $list;
    
    /**
     * 取得内容列表
     * @return type 
     */
    public function getList() {
        return $this->list;
    }
    
    public function setList($list) {
        $this->list = $list;
    }
    
    /**
     * 取得当前页号
     * @return type 
     */
    public function getPageIndex() {
        return $this->pageIndex;
    }
    
    public function setPageIndex($pageIndex) {
        if ($pageIndex >= 1) {
            $this->pageIndex = $pageIndex;
        }
    }
    
    /**
     * 取得每页显示数量
     * @return type 
     */
    public function getPageSize() {
        return $this->pageSize;
    }
    
    public function setPageSize($pageSize) {
        if ($pageSize >= 1) {
            $this->pageSize = $pageSize;
        }
    }
    
    /**
     * 取得显示页表数量
     * @param type $pageSize 
     */
    public function getPageLabelCount() {
        return $this->pageLabelCount;
    }
    
    public function setPageLabelCount($pageLabelCount) {
        if ($pageLabelCount >= 1) {
            $this->pageLabelCount = $pageLabelCount;
        }
    }
    
    /**
     * 取得内容总数量
     * @param type $pageSize 
     */
    public function getTotalCount() {
        return $this->totalCount;
    }
    
    public function setTotalCount($totalCount) {
        if ($totalCount > 0) {
            $this->totalCount = $totalCount;
        }
    }
    
    /**
     * 取得最大页数
     * @param type $pageSize 
     */
    public function getTotalPage() {
        return ceil($this->getTotalCount() / (double) $this->getPageSize()) <= 0 ? 1 : ceil($this->getTotalCount() / $this->getPageSize());
    }
    
    /**
     * 取得页标列表
     * @param type $pageSize 
     */
    public function getPageLabels() {
        $this->setPageIndex($this->getPageIndex() > $this->getTotalPage() ? $this->getTotalPage() : $this->getPageIndex());
        
        if ($this->getPageLabelCount() == 1) {
            return array($this->getPageIndex());
        }
        
        $list = array();
        
        $startPage = 0;
        $endPage = 0;
        
        if ($this->getPageLabelCount() == 2) {
            $startPage = $this->getPageIndex() == $this->getTotalPage() ? $this->getPageIndex() - 1 : $this->getPageIndex();
            $startPage = $startPage < 1 ? 1 : $startPage;
            $endPage = $startPage + 1;
            $endPage = $endPage > $this->getTotalPage() ? $this->getTotalPage() : $endPage;
        } else if ($this->getPageLabelCount() % 2 == 0) {
            $labelPage = floor(($this->getPageIndex() - 2) / ($this->getPageLabelCount() - 2)) + 1;
            $startPage = ($labelPage - 1) * ($this->getPageLabelCount() - 2) + 1;
            $startPage = $startPage < 1 ? 1 : $startPage;
            $startPage = $startPage > $this->getTotalPage() ? $this->getTotalPage() : $startPage;
            $endPage = $startPage + $this->getPageLabelCount() - 1;
            $endPage = $endPage > $this->getTotalPage() ? $this->getTotalPage() : $endPage;
            $endPage = $endPage < 1 ? 1 : $endPage;
        } else {
            $startPage = $this->getPageIndex() - (($this->getPageLabelCount() - 1) / 2);
            $startPage = $startPage < 1 ? 1 : $startPage;
            $startPage = $startPage > $this->getTotalPage() ? $this->getTotalPage() : $startPage;
            $endPage = $startPage + $this->getPageLabelCount() - 1;
            $endPage = $endPage > $this->getTotalPage() ? $this->getTotalPage() : $endPage;
            $endPage = $endPage < 1 ? 1 : $endPage;
        }
        
        for ($i = $startPage; $i <= $endPage; $i++) {
            $list[] = $i;
        }
        
        return $list;
    }
    
    /**
     * 生成一个分页信息类
     * @param array $list     当前页内容列表
     * @param int $pageIndex  当前页数
     * @param int $pageSize   每页显示数量
     * @param int $totalCount 总数量
     * @param int $labelCount 显示页表数
     */
    public function __construct($list, $pageIndex, $pageSize, $totalCount, $labelCount) {
        $this->setList($list);
        $this->setPageSize($pageSize);
        $this->setPageIndex($pageIndex);
        $this->setPageLabelCount($labelCount);
        $this->setTotalCount($totalCount);
    }
    
}

//Php分页类
class PhpPager extends BasePage
{
    public $template,$currentTemplate,$showHome,$homeName = '&lt;&lt;',$showEnd,$endName = '...';
    
    public function __construct($pageSize, $totalCount,$template = '',$currentTemplate = '',$prefix = 'page', $labelCount = 10){
        $this->template = $template;
        $this->currentTemplate = $currentTemplate;
        $pageIndex = empty($_GET[$prefix]) ? 1 : intval($_GET[$prefix]);
        $pageIndex = $pageIndex < 0 ? 1 :$pageIndex;
        parent::__construct(NULL, $pageIndex, $pageSize, $totalCount, $labelCount);
    }
    
    public function generate(){
        $str = '';
        
        $lables = $this->getPageLabels();
        if($this->showHome && $this->getPageIndex() > 0){
            $home = str_replace('{page}',1,$this->template);
            $home = str_replace('{name}',$this->homeName,$home);
            $str .= $home;
        }
        
        foreach ($lables as $label)
        {
            if($label == $this->getPageIndex()){
                $str.= str_replace(array('{page}','{name}'),$label,$this->currentTemplate);
            }else{
                $str.= str_replace(array('{page}','{name}'),$label,$this->template);
            }
        }
        
        if($this->showEnd && $this->getPageIndex() < $this->getTotalPage()){
            $end = str_replace('{page}',$this->getTotalPage(),$this->template);
            $end = str_replace('{name}',$this->endName,$end);
            $str .= $end;
        }
        return $str;
    }
}
?>