ต้องการ Download ไฟล์จาก folder ทุกชนิด เช่น pdf,word,gif,jpg เลยใช้ Code นี้ !! แต่โหลดมาแล้วไฟล์เสีย

<a href="download.php?file=<?=$data[news_file];?>&tmp=file" ><?=$data[news_file];?></a>

<?php			
$path	=	$_GET["tmp"];
$filename = $path.'/'.$_GET["file"];
           $filename = realpath($filename);
		   $file_extension = strtolower(substr(strrchr($filename,"."),1));           
		   switch ($file_extension) {               
		   case "pdf": $ctype="application/pdf"; break;               
		   case "exe": $ctype="application/octet-stream"; break;               
		   case "zip": $ctype="application/zip"; break;               
		   case "doc": $ctype="application/msword"; break;               
		   case "xls": $ctype="application/vnd.ms-excel"; break;               
		   case "ppt": $ctype="application/vnd.ms-powerpoint"; break;               
		   case "gif": $ctype="image/gif"; break;               
		   case "png": $ctype="image/png"; break;               
		   case "jpe": case "jpeg":               
		   case "jpg": $ctype="image/jpg"; break;               
		   default: $ctype="application/force-download"; }           

		   if (!file_exists($filename)) {               
		   die("NO FILE HERE");           }           
		   header("Pragma: public");           
		   header("Expires: 0");           
		   header("Cache-Control: must-revalidate, post-check=0, pre-check=0");          
		   header("Cache-Control: private",false);           
		   header("Content-Type: $ctype");
		   header("Content-Disposition: attachment; filename=".basename($filename).";");
		   header("Content-Transfer-Encoding: binary");
		   header("Content-Length: ".@filesize($filename));           
		   set_time_limit(0);           
		   @readfile("$filename") or die("File not found.");
		   exit();
?>