PHP結合Smarty分頁類

<?php
    class show_Pager
    {
      protected  $_total;                          //記錄總數
      protected  $pagesize;                       //每一頁顯示的記錄數
      public     $pages;                         //總頁數
      protected  $_cur_page;                    //當前頁碼
      protected  $offset;                      //記錄位移量
      protected  $pager_Links;                //url串連
      protected  $pernum = 5;                //頁碼位移量，這裡可隨意更改
   
      public function __construct($total,$pagesize,$_cur_page)
        {  
        $this->_total=$total;
        $this->pagesize=$pagesize;
        $this->_offset();
        $this->_pager();
        $this->cur_page($_cur_page);
        $this->link();
    }
   
    public  function _pager()//計算總頁數
    {
    return $this->pages = ceil($this->_total/$this->pa