老东西了，不少站点都有这个方法了（今天突然发现以前没用，所以就写了一下）
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<?php
class Page{
    private $totalpage;
    private $stride;
    private $currentpage;
    //设置总页数
    function setTotalpage($objpage=0){
        $this->totalpage=$objpage;
    }
    //设置当前页
    function setCurrentpage($objpage=1){
        $this->currentpage=$objpage;
    }
    //设置跨度
    function setStride($objStride=1){
        $this->stride=$objStride;
    }
    //获得总页数
    function getTotalpage(){
        return $this->totalpage;
    }
    //获得跨读
    function getStride($objStride=1){
        return $this->stride;
    }
    //获取当前页
    function getCurrentpage($objpage=1){
        return $this->currentpage;
    }
    //打印分页
    function Pageprint(){
        for($Tmpa=0;$Tmpa<$this->totalpage;$Tmpa++){
            if($Tmpa+$this->stride<$this->currentpage){//加了跨度还小于当前页的不显示
                continue;
            }
            if($Tmpa+$this->stride==$this->currentpage){//刚好够跨度的页数
                $p=$this->currentpage-$this->stride-1;
                $willprint.="<a href=\"$_SERVER[PHP_SELF]?page=1\"><strong><<</strong></a> <a href=\"$_SERVER[PHP_SELF]?page=$p\"><strong><</strong></a> ";
            }
            if($Tmpa>$this->currentpage+$this->stride){//大于当前页+跨度的页面
                break;
            }
            $willprint.="<a href=\"$_SERVER[PHP_SELF]?page=$Tmpa\"><strong>$Tmpa</strong></a> ";

            if($Tmpa==$this->currentpage+$this->stride){//刚好够跨度的页数
                $p=$this->currentpage+$this->stride+1;
                $willprint.="<a href=\"$_SERVER[PHP_SELF]?page=$p\"><strong>></strong></a> <a href=\"$_SERVER[PHP_SELF]?page=$this->totalpage\"><strong>>></strong></a>";
            }