php 根据啊拉伯数字转变成大写中文数字

<?php
$data = $_POST['rmb']; 
if (!ereg("^[0-9.]",$data) ) die('请输入数值！'); 
 
$arr = array('零','壹','贰','叁','肆','伍','陆','柒','捌','玖'); 
$arr2 = array(0=>'',1=>'十',2=>'百',3=>'千',4=>'万',5=>'十',6=>'百',7=>'千',8=>'亿',9=>'十',10=>'百',11=>'千'); 
 
$len1 = strlen($int);//判断位数 
$arrlen = array(); 
for($i=1;$i<=$len1;$i++){ 
$sublen = substr($int, $i-1,1);   
$arra['value'] = $sublen; 
$arra['len'] = $len1 - $i+1; 
array_push($arrlen, $arra); 
} 
 
for($j=0;$j<=$len1;$j++){ 
$va = $arrlen[$j]['value'];//RMB 数值 
$valen = $arrlen[$j]['len'];//长度 确定单位 
switch ($vc == $va) 
{ 
  case 0: echo  $arr[0];break;case 1: echo  $arr[1];break; 
  case 2: echo  $arr[2];break;case 3: echo  $arr[3];break; 
  case 4: echo  $arr[4];break;case 5: echo  $arr[5];break; 
  case 6: echo  $arr[6];break;case 7: echo  $arr[7];break; 
  case 8: echo  $arr[8];break;case 9: echo  $arr[9];break; 
}
?> 
<form id="form1" name="form1" method="post" action=""> 
  <input type="text" name="rmb" id="rmb" /> 
  <input type="submit" name="button" id="button" value="转换" /> 
</form>