写了两个版本，还是后面好点，只计算关键数据，返回数组，html代码例外拼接

<?php/***分页类*@authortimo*@version2016-12-1108:15*/classpaginate{//当前页码private$page;//记录总条目private$entry_total;//每页显示多少个记录private$page_size;//纯数值li总数，即分页栏的长度（不包括首尾上下页）private$page_li_count;//总页数private$page_count;private$result;private$active;//该url末尾必需带有？或者&private$url;/****@paramunknown$url跳转的链接地址*@paramunknown$entry_total记录的总条目*@paramnumber$page_size每页显示多少个记录*@paramnumber$page_li_count分页栏显示多少个纯数值的li（不包括首尾上下页），即分页栏的长度*/publicfunction__construct($entry_total,$page_size=5,$page_li_count=1){//初始化成员变量，参数还需要仔细筛选$this->entry_total=(int)$entry_total;$this->page_size=(int)$page_size;$this->page_count=ceil($entry_total/$page_size);//分页栏的长度取用户提交的分页栏长度与页面总数中的较小值$this->page_li_count=$page_li_count>$this->page_count?$this->page_count:$page_li_count;}/***设置当前页及active状态*@paramunknown$page合法参数为：firstend1234*/publicfunctionsetPage($page){if($page=='end'){$this->active='end';$this->page=$this->getPagecount();}elseif($page>0&&$page<=$this->page_count){$this->active=$page;$this->page=$page;}else{//first或传递非法值的会被定到首页去$this->active='first';$this->page=1;}}/****@paramunknown$url//该url末尾必需带有？或者&*/publicfunctionsetURL($url){$this->url=$url;}//当前页码publicfunctiongetPage(){return$this->page;}//共计多少页publicfunctiongetPagecount(){return$this->page_count;}//共计多少条记录publicfunctiongetEntrycount(){return$this->entry_total;}/***计算当前页的分页栏需要的信息*@return返回数组，包含拼接分页关键信息*/publicfunctioncreate(){//首页$first_page="first";//计算上页页码，最小为1$pre_page=($this->page-1)<=1?1:$this->page-1;//计算下一页页码，最大为page_count$next_page=($this->page+1)>=$this->page_count?$this->page_count:$this->page+1;//尾页$end_page="end";$nums_page=[];//这个判断与初始化变量中的判断重复了，但...安全点if($this->page_count>=$this->page_li_count){//中间li为第几个，偶数取中偏前的一个$mid_li=$this->page_li_count%2==0?$this->page_li_count/2:(($this->page_li_count-1)/2)+1;//理想情况下，$mid_li后面li应有的个数$right_li_num=$this->page_li_count-$mid_li;//理想情况下，$mid_li前面li应有的个数$left_li_num=$mid_li-1;//计算最右边的页码if($this->page<=$left_li_num){//若当前页左边li个数不足以让其居中，则最右端页码等于最右端li的编号$right_li_page=$this->page_li_count;}else{$right_li_page=($this->page_count-$this->page)>=$right_li_num?$this->page+$right_li_num:$this->page_count;}for($i=0;$i<$this->page_li_count;$i++){//看着可能有点绕，纸上算算就知道了，已知最右边li的页码，li的总数，当前li的编号为$i+1，算当前li对应的页码$n=$right_li_page-$this->page_li_count+$i+1;$nums_page[]=$n;}}//将这几个拼接起来$this->result['first']=$first_page;$this->result['end']=$end_page;$this->result['pre']=$pre_page;$this->result['next']=$next_page;$this->result['nums']=$nums_page;$this->result['active']=$this->active;return$this->result;}publicfunctiongetHTML(){//待完善........$url=isset($this->url)?$this->url:'?';$first_class=$this->result['active']=='first'?'active':'';$end_class=$this->result['active']=='end'?'active':'';$pre_class=$this->result['active']=='pre'?'active':'';$next_class=$this->result['active']=='next'?'active':'';$first_page_html=<<<HTML<liclass="$first_class"><ahref="{$url}page={$this->result['first']}">首页</a></li>HTML;$pre_page_html=<<<HTML<liclass="$pre_class"><ahref="{$url}page={$this->result['pre']}">上一页</a></li>HTML;$next_page_html=<<<HTML<liclass="$next_class"><ahref="{$url}page={$this->result['next']}">下一页</a></li>HTML;$end_page_html=<<<HTML<liclass="$end_class"><ahref="{$url}page={$this->result['end']}">尾页</a></li>HTML;$lis_page_html='';foreach($this->result['nums']as$v){$li_class=$this->result['active']==$v?'active':'';$lis_page_html.=<<<HTML<liclass="$li_class"><ahref="{$url}page=$v">$v</a></li>HTML;}$htmlcode=$first_page_html.$pre_page_html.$lis_page_html.$next_page_html.$end_page_html;return$htmlcode;}}/************<?phprequire'paginate02.class.php';$a=newpaginate(10,5,4);$a->setPage(isset($_GET['page'])?$_GET['page']:1);$a->create();?><!DOCTYPEhtml><htmllang="en"><head><metacharset="UTF-8"><title>fenye</title><linkrel="stylesheet"href="css/bootstrap.css"></head><body><ulclass="pagination"><?phpecho$a->getHTML()?></ul></body></html>**/