while($res =  mysql_fetch_array($sql))
  {
   var_dump($res); 
  }

SELECT V1.VID, V1.ANTAL, V1.PRIS, LEVERANTOR.LEVID, LEVERANTOR.TELEFONNUMMER FROM (VARA V1 INNER JOIN LEVERANTOR ON V1.VID=LEVERANTOR.LEVID) INNER JOIN VARA  V2 ON V2.VID=LEVERANTOR.LEVID);

+-------+---------------+-------+
| id	| name		| boss	|
+-------+---------------+-------+
| 1	| User 1	| NULL	|
| 2	| User 2	| 1	|
| 3	| User 3	| 2	|
| 4	| User 4	| 3	|
| 5	| User 5	| 4	|

(SELECT @rownum:=0) r

(X) tb1

 SELECT @rownum:=@rownum+1 rownum, tb1.*
     FROM 
         (SELECT @rownum:=0) r, 
         (X) tb1

select rownum from
	(SELECT @rownum:=@rownum+1 rownum, tb1.*
	FROM 
		(SELECT @rownum:=0) r, 
		(X) tb1 ) T
where (T.valid > 1)

$stdCount = count($students);//will give 5
$lecCount = count($graders);//will give 3
$grader = explode(',', $grader);

<?php
	$students = array('u1', 'u2', 'u3', 'u4', 'u5', 'u6', 'u7', 'u8', 'u9', 'u10');
	$lecturers = array('l1', 'l2', 'l3');

	$class = array();

	$stdCount = count($students);
	$lecCount = count($lecturers);

	for($i=0; $i < $stdCount; $i++)
	{
		$class[$lecturers[$i%$lecCount]][] = $students[$i];
	}

	echo "<pre>";