เรื่องปัดทศนิยมครับ คือถ้า 1.50 มันจะแสดงแค่ 1.5 ครับ ผมอยากให้ มันแสดง 1.50 ครับ

<?

echo "1.005 round 2 ตำแหน่ง แบบ half up แล้วได้ = ".aphalfup(1.005,2)."<br/>";
echo "1.005 round 2 ตำแหน่ง แบบ half down แล้วได้ = ".aphalfdown(1.005,2)."<br/>";

function aphalfup($num, $precision)
{
	return apprec($num, $precision, "halfup");
}

function aphalfdown($num, $precision)
{
	return apprec($num, $precision, "halfdown");
}

function apprec($num, $precision, $roundmode)
{
	$num = "$num";
	if ($num == "INFINITY" || $num == "-INFINITY") return $num;
	if ($precision < 0) $precision = 0; // negative precision not allowed
	
	if ($roundmode == "halfup") $atleast = "5";
	else if ($roundmode == "floor") $atleast = "a";
	else if ($roundmode == "halfdown") $atleast = "6";
	else if ($roundmode == "ceiling") $atleast = "1";
	else $atleast = "5"; // all other modes mean halfup
	
	$result = bcadd("$num", "0", $precision + 1);
	$result = apcorrectsign($result);
	$lastdigit = substr($result, -1);
	if ($lastdigit >= $atleast)
	{
		if (bccomp($result, "0", BCCOMP_PRECISION) == -1) $one = -1;
		else $one = 1;
		$pow = bcpow("10", "-$precision", $precision);
		$addend = bcmul($pow, "$one", $precision);
		$result = bcadd($result, $addend, $precision);
		return $result;
	}
	$result = bcadd($result, "0", $precision);
	$result = apcorrectsign($result);
	return $result;
}

function apcorrectsign($num)
{
	$num = "$num";
	if ($num == "INFINITY" || $num == "-INFINITY") return $num;
	if (substr($num, 0, 1) == "-")
	{
		$unsigned = substr($num, 1);
		if (bccomp($unsigned, "0", BCCOMP_PRECISION) == 0)
		{
			return substr($num, 1);
		}
		return $num;
	}
	return $num;
}
?>