PHPwind 伪静态简化URL长度为1.html，f2等的方法介绍

                     default:
                         $rw['type'] = 4;
                         $urlfail = 1;
                         break;
                         }
                     }
                 }
             switch($rw['type']){
             case '1':
                 $url = $rw['tid'] . ".html";
                 break;
             case '2':
                 $url = $rw['tid'] . "_" . $rw['page'] . ".html";
                 break;
             case '3':
                 $url = $rw['tid'] . "_" . $rw['page'] . "_" . $rw['fpage'] . ".html";
                 break;
                 }
             }
         if($urlfail){
             $url = str_replace(
                array('.php?', '=', '&', $add),
                 array($db_dir, '-', '-', ''),
                 $url
                ) . $db_ext . $add;
             }