下载文件的点击数回填

需要名称为book的mysql数据库表 表中含有下列字段： id;;;下载的文件的唯一标识 downnum;;点击数 first.php <?while($myrow = @mysql_fetch_array($result)) { ?> <TR> <TD> <?if(empty($myrow["downnum"])) echo "0"else echo $myrow["downnum"]; ?>;;</TD> <TD> <a;;href="ddload.php?purl=downfileurl&dnnum=<?echo $myrow['downnum'] ?>&id=<?echo $myrow['id']?>">click here download </a> </TD> </TR> <?};?> ;;ddload.php <? ;;;;;include("data.inc.php"); ;;;;;if($incerror) ;;;;;{ ;;;echo $incerror; ;;;exit; ;;;;;} ;;;;;if(empty($dnnum)) $dnnum = 1; ;;;;;else $dnnum ++; ;;;;;$sql = "update book set downnum ='$dnnum' where id =$id";;;;mysql_query($sql); ;;;;;mysql_close($connect); ;;;;;header("location:$purl"); ?>