php mysql数据库操作分页类

                        $end_p = $this->total_pages;
                    }
                }else{
                    $end_p = $this->total_pages;
                }
            }
            $str = "";
            for ($i=$start_p; $i<=$end_p; $i++){
                if ($i==$this->page){
                    $str.= " <strong>".$i."</strong> ";
                }else{
                    $str.= " <a href='".$this->url.$i."'>".$i."</a> ";
                }
            }
            return $str;
        }
        function show_page_info(){
            $str = " 共".$this->total_records."条/".$this->total_pages."页";
            return $str;
        }
        function show_page(){
            if ($this->total_records<1){
                $this->set_show_page();
            }
            $str = $this->total_pages>1 ? $this->show_first_prv().$this->show_num_btn().$this->show_next_last().$this->show_page_info().$this->show_num_text():"";
            return $str;