$f_id =isset($_GET[id])?$_GET[id]:;
$t_id =isset($_GET[tid])?$_GET[tid]:;
$t_na =($t_id==1)?"su_photo":"su_video";
if($t_id==1){
$t_na=su_photo;
}else if($t_id==2){
$t_na=su_video;
}else{
$t_na=su_cert;
}
$sql ="select * from $t_na where id=$f_id and uid=".$_SESSION[xm]." ";
$result =mysql_query($sql) or exit("system busy...");
if(!mysql_num_rows($result)){exit("
alert(记录不存在!);history.back();
");}
$rs =mysql_fetch_object($result);
$file_name=substr($rs->path,strrpos($rs->path,"/")+1);
$file_dir =substr($rs->path,0,strlen($rs->path)-strlen($file_name));
$file_dir=realpath(str_replace(../,,$file_dir))."";
$rpath=$file_dir.$file_name;
if (!file_exists($rpath)) { //检查文件是否存在
exit("
alert(文件找不到!);history.back();
");
} else {
$tent=substr($rpath,strrpos($rpath,".")+1);
$file = fopen($rpath,"r"); // 打开文件
Header("Content-type: ".headertype($tent)."");
Header("Accept-Ranges: bytes");
Header("Accept-Length: ".filesize($file_dir . $file_name));
Header("Content-Disposition: attachment; filename=" . $file_name);
echo fread($file,filesize($file_dir . $file_name));
fclose($file);
exit("
alert(下载完毕!);history.back();
");
}
function headertype($type){
switch($type){
case gif:
return image/gif;
break;
case jpg:
return image/pjpeg;
break;
case bmp:
return image/bmp;
break;
case png:
return image/x-png;
break;
case txt:
return application/octet-stream;
break;
case zip:
return application/x-zip-compressed;
break;
case rar:
return application/x-rar-compressed;
break;
case doc:
return application/msword;
break;
case swf:
return application/x-shockwave-flash;
break;
case wma:
return audio/x-ms-wma;
break;
case rm:
return "application/vnd.rn-realmedia";
break;
case mp3:
return "audio/mp3";
break;
default:
return text/plain;
}
}
?>

文章地址:http://www.phprm.com/frame/php1004836.html

转载随意^^请带上本文地址!