need a FOR command insted of this

[jurros]

$insertSetning = "insert into undersok (sporsmaal";
$verdiSetning = " values('$s'";
for($i = 0;$i < count($a);$i++)
{
$insertSetning .= ",alter$i";
$verdiSetning .= ",'$a[$i]'";
}
Under here i need a simple for insted of the arry thing
$antallAlt=0;

	$alter = array();
	if($a0 != "")
		{
		$alter[0] = $a0;
		$antallAlt++;
		}
	if($a1 != "")
		{
		$alter[1] = $a1;
		$antallAlt++;
		}
	if($a2 != "")
		{
		$alter[2] = $a2;
		$antallAlt++;
		}
	if($a3 != "")
		{
		$alter[3] = $a3;
		$antallAlt++;
		}
	if($a4 != "")
		{
		$alter[4] = $a4;
		$antallAlt++;
		}
	if($a5 != "")
		{
		$alter[5] = $a5;
		$antallAlt++;
		}
	if($a6 != "")
		{
		$alter[6] = $a6;
		$antallAlt++;
		}
	if($a7 != "")
		{
		$alter[7] = $a7;
		$antallAlt++;
		}
	if($sporsmaal != "" && $antallAlt>1)
		leggtilUnder($sporsmaal,$alter);
	if	($sporsmaal=="")	echo feilPip(1);
	if	($antallAlt<2)		echo feilPip(0);

[Weedpacket]

for($i=0; $i<7; ++$i)
 if(${'a'.$i} != "")
{
$alter[$i] = ${'a'.$i};
$antallAlt++;
} 

[jurros]

thx