สอบถามเรื่องการ Download file ด้วยการใช้ Header [PHP] ครับ รบกวนด้วยน่ะครับ พอดีทำแล้วมันไม่ได้ครับ พี่ WIN ช่วยด้วยครับ พี่ Plakrim

if($_POST['dl']){
	
		   $path	=	'FileUpload';
						

		   $realpath = $path .'/'.$_POST['dl'];

	
		 

		  $filename1 = realpath($realpath);
		
	//		file_exists($filename1);
		
	      $file_extension = strtolower(substr(strrchr($filename1,"."),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($filename1)) {
               echo"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: ".$ctype);
		   header("Content-Description: File Transfer");
           header("Content-Disposition: attachment; filename=".basename($filename1));
           header("Content-Transfer-Encoding: binary");
           header("Content-Length: ".filesize($filename1));
           readfile($filename1) or die("File not found.");
//		    set_time_limit(0);
		   

}