มีปัญหาเรื่อง unlink ครับมันลบไฟล์ภาพ ใน Folder ไม่ครบทุกภาพ

<?
	include("../connect/connect.php");
	
	$n_id	= $_GET['n_id'];
	
	$sql	= "select * from news where n_id = '$n_id' ";
	$query	= mysql_query($sql) or die ("Select news error : $sql");
	$num	= mysql_num_rows($query);
	
	for ($i=1;$i<=$num;$i++)
	{
		$row	= mysql_fetch_array($query);
		$file	= "../imagesup/".$row['prd_news'];
		if (is_file($file))
		{
			unlink($file);
		}
	}
	
	$sql	= "delete from news where n_id = '$n_id'";
	mysql_query($sql)or die("Delete A error : $sql");
	
	$sql	= "select * from pic_news where n_id ='$n_id'";
	$query	= mysql_query($sql)or die("Selcet pic error : $sql");
	$row	= mysql_fetch_array($query);
	
		$file	= "../imagesup/".$row['photo_news'];
	
	if (is_file($file))
	{
		unlink ($file);
		
	}
	
	
	$sql	= "delete from pic_news where n_id=$n_id";
	mysql_query($sql)or die("Delte @ error : $sql");
	echo "<script>alert('ลบสำเร็จแล้วครับ');window.location='news.php'</script>";
?>

        $sql	= "select * from pic_news where n_id ='$n_id'";
	$query	= mysql_query($sql)or die("Selcet pic error : $sql");
	$row	= mysql_fetch_array($query);
	
		$file	= "../imagesup/".$row['photo_news'];
	
	if (is_file($file))
	{
		unlink ($file);
		
	}