$sql=mysql_query("insert into ".$BIAOTOU."ads(fid,lan,title,adsurl,img,img_thumb,addtime,content) values ('{$fid}','{$lan}','{$title}','{$adsurl}','{$img}','{$img_thumb}','{$addtime}','{$content}')");
改成
$sql=mysql_query("insert into ".$BIAOTOU."ads(fid,lan,title,adsurl,img,img_thumb,addtime,content) values ('{$fid}','{$lan}','{$title}','{$adsurl}','{$img}','{$img_thumb}','{$addtime}','{$content}')")or die(mysql_error());
你就能看到为什么 无法写入咯