ขอฟังค์ชั่นเกี่ยวกับ แสดงผลวันเวลาแบบนี้หน่อยอ่ะค่ะ

<?php if (empty($_POST)) { ?>
<form id="form1" name="form1" method="post" action="">
  <input type="text" name="txt" id="txt" />
  <input type="submit" name="button" id="button" value="Submit" />
</form>
<?php } else { ?>

<?php function ConvertMinutes2Hours($Minutes)
{
    if ($Minutes < 0)
    {
        $Min = Abs($Minutes);
    }
    else
    {
        $Min = $Minutes;
    }
    $iHours = Floor($Min / 60);
    $Minutes = ($Min - ($iHours * 60)) / 100;
    $tHours = $iHours + $Minutes;
    if ($Minutes < 0)
    {
        $tHours = $tHours * (-1);
    }
    $aHours = explode(".", $tHours);
    $iHours = $aHours[0];
    if (empty($aHours[1]))
    {
        $aHours[1] = "00";
    }
    $Minutes = $aHours[1];
    if (strlen($Minutes) < 2)
    {
        $Minutes = $Minutes ."0";
    }
    $tHours = $iHours .":". $Minutes;
    return $tHours;
}
//Test Code
$minute = $_POST['txt'] * 60;
echo ConvertMinutes2Hours($minute); // This should print  3:40
?>

<?php } ?>

<?php
echo compared_time(1.5);
function compared_time($dec_time){
	if(strpos($dec_time,".")!=""){
		$tmp=explode(".",$dec_time);
		$hour=$tmp[0];
		$dec_min=$dec_time-$hour;
	}else{
		$hour=$dec_time;
		$dec_min=0;
	}
	$min=$dec_min*60;
	return $hour." ชั่วโมง ".$min." นาที";
}
?>