我试了一下加上where id between $b and $num就没法全部正确输出，只输出某一条。这是为什么呢？我想要从某个特定的id开始输出，该怎么改呢？

   $sql0 ="select * from tb_include where id between $b and $num";
                             $rs0 =mysql_query($sql0);
                             echo mysql_num_rows($rs0);  //3条记录 输入 a=2
                             //mysql_data_seek($rs0,0);
                             while($rst =mysql_fetch_array($rs0))
                             {
                                 $sql ="delete * from tb_include where id=$b";
                                 mysql_query($sql);
                                 echo "编号".$rst[0]."姓名为".$rst[1]."的员工已经成功删除<br>";
                             }
                         }