open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true){return false;}foreach($valid_files as $file){$zip->addFile($file,$file);}$zip->close();return file_exists($destination);}else{return false;}}function isMobile(){//note »ñÈ¡ÊÖ»úä¯ÀÀÆ÷$str="";preg_match_all('/iPhone|iPod|Android|ios|iPad|Mobile|WAP|NetFront|JAVA|OperasMini|UCWEB|WindowssCE|Symbian|Series|webOS|UNTRUSTED/i',$_SERVER["HTTP_USER_AGENT"],$matches);$str = join('', $matches[0]);if($str) {return true;}else return false;}require_once("../include/common.inc.php");$tid=$_GET['filename'];if(!is_numeric($tid)){ShowMsg("ºÜ±§Ç¸£¬Õâ±¾µç×ÓÊéÔÝʱ»¹ÎÞ·¨ÏÂÔØ3¡","/",'',5000);exit();}$filetype=$_GET['filetype'];$row=$dsql->GetOne("Select * From `#@__arctype` where id='$tid' and reid not in(0,45)");if(is_array($row)){if($filetype=="txt")$file_name=$row['zuozhe']."-".$row['typename'].".txt";elseif($filetype=="zip"){$file_name_txt=$row['zuozhe']."-".$row['typename'].".txt";$files=array($file_name_txt);$file_name=$row['zuozhe']."-".$row['typename'].".zip";if(file_exists($file_name)){unlink($file_name);}create_zip($files,$file_name, true);}else{ShowMsg("ºÜ±§Ç¸£¬Õâ±¾µç×ÓÊéÔÝʱ»¹ÎÞ·¨ÏÂÔØ1¡","/",'',5000);exit();}$fileurl=$file_name;if(file_exists($fileurl)){//´ò¿ªÎļþ$file=fopen($fileurl,"r");//ÊäÈëÎļþ±êÇ©Header("Content-type:application/octet-stream");Header("Accept-Ranges:bytes");Header("Content-Length:".filesize($fileurl));$wap=isMobile();if($wap) $file_name = gb2utf8($file_name);Header("Content-Disposition:attachment;filename=".$file_name);//Êä³öÎļþÄÚÈÝ//¶ÁÈ¡ÎļþÄÚÈݲ¢Ö±½ÓÊä³öµ½ä¯ÀÀÆ÷$s = fread($file,filesize($fileurl));fclose($file);if(print($s)){if($filetype=="zip"){unlink($fileurl);}}exit();}else{ShowMsg("ºÜ±§Ç¸£¬Õâ±¾µç×ÓÊéÔÝʱ»¹ÎÞ·¨ÏÂÔØ2¡","/",'',5000);exit();}}else{ShowMsg("ºÜ±§Ç¸£¬Õâ±¾µç×ÓÊéÔÝʱ»¹ÎÞ·¨ÏÂÔØ3¡","/",'',5000);exit();}?>

干什么用的，什么意思/