page.php

<?
class page{
 var $output;
 var $file;
 var $pagestr = "page";
 var $perpage;
 var $current_page;
 var $send_str;
 var $total_page;
 var $page_start;
 var $page_end;
 var $total;

 function sendstr($data){
                        foreach($data as $k=>$v)
                               {
                               $j++;
                               if($j==1)$this->send_str.='?'.$k.'='.urlencode($v);
                               else $this->send_str.='&'.$k.'='.urlencode($v);
                               }
                               return $this->send_str;
                        }

 function set($perpage,$total,$current_page = false)
         {
         global $HTTP_SERVER_VARS,$HTTP_GET_VARS;

         if($total<$perpage){$this->total_page = 1;}
         elseif(($total%$perpage)!= 0){$this->total_page = ceil($total/$perpage);}
         else {$this->total_page = intval($total/$perpage);}

         if(!$current_page or $current_page<1){$current_page = 1;}
         else{$current_page = $HTTP_GET_VARS[$this->pagestr];}

         $this->perpage = $perpage;
         $this->current_page = $current_page;
         $this->total = $total;

         if(!$this->file){$this->file = $HTTP_SERVER_VARS['PHP_SELF'] ? $HTTP_SERVER_VARS['PHP_SELF'] : $HTTP_SERVER_VARS['SCRIPT_NAME'];}
         $this->file.=$this->send_str;
         strstr($this->file,'?') ? $split = '&' : $split = '?';

         if($this->total_page>1){
                          $this->output.='共<font color=red><b>'.$total.'</b></font>条记录 每页显示<font color=red>'.$perpage.'</font>条 ';
                          if($current_page>10){
                                              $this->output.='<a href='.$this->file.$split.$this->pagestr.'='.($current_page-10).' title="显示前10页">前10页</a>&nbsp;';
                                              }
                          if($current_page>1) {
                                              $this->output.='<a href='.$this->file.$split.$this->pagestr.'='.($current_page-1).' title="上一页">上一页</a>&nbsp;';
                                              }
                          $start = floor($current_page/10)*10;
                          $end=$start+9;

                          if($start<1)$start = 1;
                          if($end>$this->total_page)$end = $this->total_page;

                          for($i=$start;$i<=$end;$i++)
                             {
                             if($current_page==$i){
                                                  $this->output.='<font color=red>'.$i.' </font>';
                                                  }
                             else{
                                 $this->output.='[<a href='.$this->file.$split.$this->pagestr.'='.$i.'>'.$i.'</a>]&nbsp;';
                                 }

                              }
                          if($current_page<$this->total_page){
                                                             $this->output.='<a href='.$this->file.$split.$this->pagestr.'='.($current_page+1).' title="下页">下页</a>&nbsp;';
                                                             }

                          if(($this->total_page-$current_page)>=10){
                                                                   $this->output.='<a href='.$this->file.$split.$this->pagestr.'='.($current_page+10).' title="显示后10页">后10页</a>&nbsp;';
                                                                   }

                          }
                          else $this->output="&nbsp;";

         }
 function limit(){
 return (($this->current_page-1)*$this->perpage.','.$this->perpage);
 }

 function get_start_end(){
 $begin=($this->current_page-1)*$this->perpage;
 $end=$this->total-$begin-$this->perpage;
 if($end<0)$end=0;
 $start=$this->total-$begin-1;
 return array('start'=>$start,'end'=>$end);
 }
}
?>