การจำกัดขนาดไฟล์ แบบ multiple upload ครับ ขอสอบถามผู้รู้ครับผม

$num = count($_FILES["fileupload"]["name"]);
for($i=0;$i<$num;$i++)
{
	$size = $_FILES["fileupload"]["size"];
	if($size>8388608)
	{
		echo "please upload < 8 MB";
	}
	else
	{
	if(trim($_FILES["fileupload"]["tmp_name"][$i]) != "")
	{
		$w_max = 800;
		$h_max = 600;
		
		$images = $_FILES["fileupload"]["tmp_name"][$i];
		$new_images = "gallery_".date("Ymd")."_".$_FILES["fileupload"]["name"][$i];
		$new_img_upload = "gallery_".date("Ymd")."_".iconv("UTF-8", "TIS-620",$_FILES["fileupload"]["name"][$i]);

		$size = GetimageSize($images);

		$images_orig = ImageCreateFromJPEG($images);
		$w_src = ImagesX($images_orig);
		$h_src = ImagesY($images_orig);
		
		if($w_src > $w_max || $h_src > $h_max)
		{
			$images_fin = ImageCreateTrueColor($w_max, $h_max);
			ImageCopyResampled($images_fin, $images_orig, 0, 0, 0, 0, $w_max+1, $h_max+1, $w_src,$h_src);
			ImageJPEG($images_fin,"../../Activity/myfile/".$new_img_upload);
			ImageDestroy($images_orig);
			ImageDestroy($images_fin);
			
			echo "Copy/Upload Complete<br>";
	
			//*** Insert Record ***//
			
			$strSQL = "INSERT INTO gallery ";
			$strSQL .="(AlbumID,GalleryShot) VALUES ('".$_GET["AlbumID"]."','".$new_images."')";
			$objQuery = mysql_query($strSQL);		
		}
		else
		{
			move_uploaded_file($_FILES["fileupload"]["tmp_name"][$i],"../../Activity/myfile/".$new_img_upload);
			
			echo "Copy/Upload Complete<br>";
	
			//*** Insert Record ***//
			
			$strSQL = "INSERT INTO gallery ";
			$strSQL .="(AlbumID,GalleryShot) VALUES ('".$_GET["AlbumID"]."','".$new_images."')";
			$objQuery = mysql_query($strSQL);
		}
	}
}