สอบถามเรื่องการ Download file จาก host [PHP] รบกวนจริงๆครับอยากจะปิดงานก่อนสงกรานต์

//ถ้ากดปุ่ม upload now จะแสดงหน้า อัพโหลด

if($_POST['import']){
	
	echo'<p>';

	
	$convert_size = number_format(($_FILES["file_1"]["size"]/1024),1)." KB";
	
	
	copy($_FILES["file_1"]["tmp_name"],"FileUpload/".$_FILES["file_1"]["name"]);

	 $userfile_name = $_FILES["file_1"]['name']; // file name  
	 $userfile_tmp  = "FileUpload/".$_FILES["file_1"]['name']; // actual location  
	 $userfile_size  = $_FILES["file_1"]['size']; // file size  
	 $userfile_type  = $_FILES["file_1"]['type']; // mime type of file determined by php  
	 $userfile_error  = $_FILES["file_1"]['error']; // any error!. get reason here 
	 $date1 = date("Y-m-d H:i:s");
	
	$sql_upload = "insert into asmt_file_upload(FileDescription,FileName,FileType,FileSize,FileExtension,FilePath,FileUploadBy,FileUploadDate,Supplier) values('$_POST[file_name]','$userfile_name','$_POST[file_type]','$convert_size','$userfile_type','$userfile_tmp','$_SESSION[name]','$date1','$_POST[sup_ID]')";
	$query_upload = mysql_query($sql_upload)or die(mysql_error());
	if($query_upload){
		echo'<script>alert("COMPLETE :: Upload Successful!");</script>';
	}
	

}
//ถ้ากดปุ่ม download_file จะแสดงหน้าจอการ download 

if($_POST['download_file']){
	echo'<p>';
	echo'<form action="" method="post" enctype="multipart/form-data">';
	echo'<table width="100%" align="center">';
	echo'<tr bgcolor="lightblue">';
	echo'<td align="center">Description File</td>';
	echo'<td align="center">File Name</td>';
	echo'<td align="center">File Group</td>';
	echo'<td align="center">File Size</td>';
	echo'<td align="center">Date Uploaded</td>';
	echo'<td align="center">Download</td>';
	echo'</tr>';

		$sql_pull_data = "select * from asmt_file_upload where Supplier = '$_SESSION[me]' order by FileUploadDate desc";
		$query_pull_data = mysql_query($sql_pull_data)or die(mysql_error());
		while($result_pull_data = mysql_fetch_array($query_pull_data)){
			echo'<tr>';
			echo'<td>'.$result_pull_data['FileDescription'].'</td>';
			echo'<td>'.$result_pull_data['FileName'].'</td>';
			echo'<td align="center">'.$result_pull_data['FileType'].'</td>';
			echo'<td align="center">'.$result_pull_data['FileSize'].'</td>';
			echo'<td align="center">'.$result_pull_data['FileUploadDate'].'</td>';
			echo'<td align="center"><button name="dl" value="'.$result_pull_data['FileName'].'"><img src="images/download.jpg" width="25" height="25"></button></td>';
			echo'</tr>';
		}
	echo'</table>';
	echo'</form>';
}

//ถ้ากดปุ่ม dl รูป download

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


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

	
		   $filename = $realpath;

		   

	
  //       $filename = realpath($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.");

}