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103 lines
2.6 KiB
103 lines
2.6 KiB
<?php
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class Tool_Page{
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/**
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* 当前页码
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*/
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public $mPage = 1;
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/**
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* 每页显示条数
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*/
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public $mPagesize;
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/**
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* 最大页码
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*/
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public $mPageMax;
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public $mCnt = 0;
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/**
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* 构造函数
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* @param int $pCnt 总记录数
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* @param int $pPagesize 每页显示条数
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*/
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function __construct($pCnt, $pPagesize = 10){
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$this->mCnt = $pCnt;
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if($this->mPageMax = ceil($pCnt / $this->mPagesize = $pPagesize)){
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if(isset($_GET['p']) && ($this->mPage = abs($_GET['p'])) && ($this->mPageMax < $this->mPage)){
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$this->mPage = $this->mPageMax;
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}
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}
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$this->mPage || $this->mPage = 1;
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}
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/**
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* 分页
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*/
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function limit(){
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return (($this->mPage - 1) * $this->mPagesize).','.$this->mPagesize;
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}
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/**
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* 处理连接
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*/
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private $_href = '';
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function _default_href($pHref=''){
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if($pHref) return $this->_href = $pHref;
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if(!$this->_href){
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$tGet = $_GET;
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if(isset($tGet['p'])) unset($tGet['p']);
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$tUrl = isset($_SERVER['REDIRECT_URL'])? $_SERVER['REDIRECT_URL']: '';
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$tHref = $tUrl.(empty($tGet)? '?p=': '?'.http_build_query($tGet).'&p=');
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$this->_href = ' <li><a href="'.urldecode($tHref).'%d">%s</a></li> ';
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}
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return $this->_href;
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}
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/**
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* 显示分页
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*/
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function show($pHref=''){
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$this->_default_href($pHref);
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if($this->mPageMax == 1) return '';
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$tPage = array();
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# 当前之前
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$tMax = $this->mPageMax - $this->mPage > 5? 5: 10 - $this->mPageMax + $this->mPage;
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for ($i = 0; $i < $tMax; $i++) {
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if(($tNum = $this->mPage - $i) < 1) break;
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$tPage[] = $tNum;
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}
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$tPage && sort($tPage);
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# 当前之后
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($tMax = 10 - ($tCnt = count($tPage))) < 5 && $tMax = 5;
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($tMax > ($this->mPageMax - $this->mPage)) && $tMax = $this->mPageMax - $this->mPage;
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for ($i = 0; $i < $tMax; $tPage[] = ++$i + $this->mPage);
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# 渲染分页
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$tHtml = '<div class="page"><ul class="pagination">';
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# 上一页
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$tHtml .= $this->_make_href($this->mPage-1, ' < ');
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# 页码
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foreach ($tPage as $v1) $tHtml .= $this->_make_href($v1, $v1);
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# 下一页
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$tHtml .= $this->_make_href($this->mPage+1, ' > ');
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$tHtml .= $this->_make_href($this->mPageMax, '尾页');
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return $tHtml.'</UL></div>';
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}
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/**
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* 制造链接(逻辑写的不好，代码比较丑)
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* @param $p
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* @param $t
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* @return string
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*/
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function _make_href($p, $t){
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if($p > $this->mPageMax) {
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$tReplace = array('%d'=>$this->mPage, '%s'=>$t);
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} elseif($this->mPage == $p){
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$tReplace = array('">' => '" class="active">', '%d'=>$p, '%s'=>$t);
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} else {
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$tReplace = array('%d'=>$p, '%s'=>$t);
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}
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return strtr($this->_href, $tReplace);
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}
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}
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