ช่วยดูโค้ด นี้ให้ผมหน่อยเถอะครับ งมมาหลายวันแล้วครับ!!!

<?php
		if($op=="adddo"){
			$d_type=$_POST[d_type];
			$d_title=$_POST[d_title];
			$d_detail=$_POST[d_detail];
			$d_path1=$_POST[d_path1];
			$d_path2=$_POST[d_path2];
			$d_status=$_POST[d_status];
			if($d_type=="none" or $d_title=="" or $d_detail=="" or $d_path1=="../GG/" or $d_status=="none"){
				echo"<script>alert('Please Check field(s) for empty data!!');</script>";
				echo"<meta http-equiv=\"refresh\" content=\"0;URL=addfile.do\" />";
			}else{
				$date="$datenow"." "."$timenow";
				$add="INSERT INTO download (d_date,d_type,d_title,d_detail,d_path,d_status) VALUES ('$date','$d_type','$d_title','$d_detail','$d_path1','$d_status')";
				$qadd=mysql_db_query($dbname,$add);
				if($qadd){
					echo"<script>alert('Add file Successfully!!');</script>";
					echo"<meta http-equiv=\"refresh\" content=\"0;URL=admin.html\" />";
				}else{
					echo"<script>alert('Sorry!! Can't add file.');</script>";
					echo"<meta http-equiv=\"refresh\" content=\"0;URL=admin.html\" />";
				}
			}
		}
		?>