ผมอยากได้ function เกี่ยวกับ การแปลงตัวเลขเป็นตัวอักษรอะคับ

<?php
<meta http-equiv="Content-Type" content="text/html; charset=windows-874" />
<script type="text/javascript">


	 function KeyCode(objId){
   if (event.keyCode >= 96 && event.keyCode<=105 || event.keyCode==110 || event.keyCode==8)
			return true;
	 else
		return false;
    }
</script>
<?
function tostr($num)
{
	$cnum = array();
	$thnum1 = array("ศูนย์","หนึ่ง","สอง","สาม","สี่","ห้า","หก","เจ็ด","แปด","เก้า","เอ็ด","ยี่");
	$thnum2 = array("สิบ","ร้อย","พัน","หมื่น","แสน","ล้าน","สิบ","ร้อย","พัน","หมื่น","แสน");

	$countnum = strlen($num);				//นับจำนวนตัวอักษร
	$numpos = ($countnum-1);				 // เลขประจำหลัก
	
	for($i=0;$i<$countnum;$i++)			//ตัวเลขแต่ละหลักไปคูณค่าประจำหลัก
	{
		$pow = pow(10,$numpos);
		$position = $pow*(substr($num,$i,1));
		$cnum[$i] = $position;					//เก็บไว้ที่ array $cnum
		$numpos-=1;									//ลดค่าประจำหลัก
	}

	$strth="";
	for($j=0;$j<$countnum-2;$j++)
	{
			if($j==$countnum-7 && substr($cnum[$countnum-7],0,1)==1&&$countnum>7)
			{
				$strth .= $thnum1[10];
				$pos = strlen($cnum[$j]);
				$pos -=2;
				$strth .= $thnum2[$pos];
			}
			elseif($j==$countnum-7 && substr($cnum[$countnum-7],0,1)==0&&$countnum>7)
			{
				$strth .= $thnum2[5];
			}
			elseif($j==$countnum-8 && substr($cnum[$countnum-8],0,1)==1)
			{
				$strth .= $thnum2[0];
			}
			elseif($j==$countnum-8 && substr($cnum[$countnum-8],0,1)==2)
			{
				$twenty = $thnum1[11].$thnum2[0];
				$strth .= $twenty;
			}
			else
			{
					$first = substr($cnum[$j],0,1);
					if($first ==0)
					{
						$strth .= "";
					}
					else
					{
						$strth .= $thnum1[$first];
						$pos = strlen($cnum[$j]);
						$pos -=2;
						$strth .= $thnum2[$pos];
					}
			}
		}
		
		if(substr($cnum[$countnum-2],0,1)==0)
		{
			$strth .= "";
		}
		elseif(substr($cnum[$countnum-2],0,1)==1)
		{
			$strth .= $thnum2[0];
		}
		elseif(substr($cnum[$countnum-2],0,1)==2)
		{
			$twenty = $thnum1[11].$thnum2[0];
			$strth .= $twenty;
		}
		else
		{
			$value = substr($cnum[$countnum-2],0,1);
			$strth .= $thnum1[$value];
			$pos = strlen($cnum[$countnum-2]);
			$pos-=2;
			$strth .= $thnum2[$pos];
		}
		if(substr($cnum[$countnum-1],0,1)==0 && $countnum>1)
		{
			$strth .= "";
		}
		elseif(substr($cnum[$countnum-1],0,1)==1&& $countnum>1)
		{
			$strth .= $thnum1[10];
		}
		else
		{
			$value = substr($cnum[$countnum-1],0,1);
			$strth .= $thnum1[$value];
		}

		return $strth;
}

if(isset($_POST['Convert']))
{
	tostr($num);
	$num = $_POST['txt'];
	echo "Arabic Format : ".number_format($num)."<br>";
	echo "Conver to Thai String Format : ".tostr($num);
}
?>
<br>
<br>
<form method="post" name="form1" action="<?=$_SERVER['PHP_SELF']?>">
Convert Arabic Format To Thai Format <br>
<input type="text" name="txt" size="20" maxlength="12" onKeyDown="return KeyCode(txt)">
<input type="Submit" name="Convert" value=" Convert ">
</form>
?>

<?php

function num2thai($number)
{
	$t1 = array("ศูนย์", "หนึ่ง", "สอง", "สาม", "สี่", "ห้า", "หก", "เจ็ด", "แปด", "เก้า");
	
	$t2 = array("เอ็ด", "ยี่", "สิบ", "ร้อย", "พัน", "หมื่น", "แสน", "ล้าน");
	
	$zerobahtshow = 0; // ในกรณีที่มีแต่จำนวนสตางค์ เช่น 0.25 หรือ .75 จะให้แสดงคำว่า ศูนย์บาท หรือไม่ 0 = ไม่แสดง, 1 = แสดง

	(string) $number;
	
	$number = explode(".", $number);
	
	if(!empty($number[1]))
	{
		if(strlen($number[1]) == 1)
		{
			$number[1] .= "0";
		}
		elseif(strlen($number[1]) > 2)
		{
			if($number[1]{2} < 5)
			{
				$number[1] = substr($number[1], 0, 2);
			}
			else
			{
				$number[1] = $number[1]{0}.($number[1]{1}+1);
			}
		}
	}
	for($i=0; $i<count($number); $i++)
	{
		$countnum[$i] = strlen($number[$i]);
		
		if($countnum[$i] <= 7)
		{
			$var[$i][] = $number[$i];
		}
		else
		{
			$loopround = ceil($countnum[$i]/6);
			
			for($j=1; $j<=$loopround; $j++)
			{
				if($j == 1)
				{
					$slen = 0;
					$elen = $countnum[$i]-(($loopround-1)*6);
				}
				else
				{
					$slen = $countnum[$i]-((($loopround+1)-$j)*6);
					$elen = 6;
				}
				$var[$i][] = substr($number[$i], $slen, $elen);
			}
		}
		
		$nstring[$i] = "";
		
		for($k=0; $k<count($var[$i]); $k++)
		{
			if($k > 0) $nstring[$i] .= $t2[7];
			
			$val = $var[$i][$k];
			
			$tnstring = "";
			
			$countval = strlen($val);
			
			for($l=7; $l>=2; $l--)
			{
				if($countval >= $l)
				{
					$v = substr($val, -$l, 1);
					
					if($v > 0)
					{
						if($l == 2 && $v == 1)
						{
							$tnstring .= $t2[($l)];
						}
						elseif($l == 2 && $v == 2)
						{
							$tnstring .= $t2[1].$t2[($l)];
						}
						else
						{
							$tnstring .= $t1[$v].$t2[($l)];
						}
					}
				}
			}
			if($countval >= 1)
			{
				$v = substr($val, -1, 1);
				
				if($v > 0)
				{
					if($v == 1 && $countval > 1 && substr($val, -2, 1) > 0)
					{
						$tnstring .= $t2[0];
					}
					else
					{
						$tnstring .= $t1[$v];
					}
				}
			}
			$nstring[$i] .= $tnstring;
		}
	}
	
	$rstring = "";
	
	if(!empty($nstring[0]) || $zerobahtshow == 1 || empty($nstring[1]))
	{
		if($nstring[0] == "") $nstring[0] = $t1[0];
		$rstring .= $nstring[0]."บาท";
	}
	if(count($number) == 1 || empty($nstring[1]))
	{
		$rstring .= "ถ้วน";
	}
	else
	{
		$rstring .= $nstring[1]."สตางค์";
	}
	return $rstring;
}


//header('Content-type:text/html; charset=utf-8;');

echo num2thai(2559844);

?>