人民币数字转大写中文的函数

<?
 function toCNcap($data){
   $capnum=array("零","壹","贰","叁","肆","伍","陆","柒","捌","玖");
   $capdigit=array("","拾","佰","仟");
   $subdata=explode(".",$data);
   $yuan=$subdata[0];
   $j=0; $nonzero=0;
   for($i=0;$i<strlen($subdata[0]);$i++){
      if(0==$i){ //确定个位 
         if($subdata[1]){ 
            $cncap=(substr($subdata[0],-1,1)!=0)?"元":"元零";
         }else{
            $cncap="元";
         }
      }   
      if(4==$i){ $j=0;  $nonzero=0; $cncap="万".$cncap; } //确定万位
      if(8==$i){ $j=0;  $nonzero=0; $cncap="亿".$cncap; } //确定亿位
      $numb=substr($yuan,-1,1); //截取尾数
      $cncap=($numb)?$capnum[$numb].$capdigit[$j].$cncap:(($nonzero)?"零".$cncap:$cncap);
      $nonzero=($numb)?1:$nonzero;
      $yuan=substr($yuan,0,strlen($yuan)-1); //截去尾数	  
      $j++;
   }

   if($subdata[1]){
     $chiao=(substr($subdata[1],0,1))?$capnum[substr($subdata[1],0,1)]."角":"零";
     $cent=(substr($subdata[1],1,1))?$capnum[substr($subdata[1],1,1)]."分":"零分";
   }
   $cncap .= $chiao.$cent."整";
   $cncap=preg_replace("/(零)+/","\\1",$cncap); //合并连续“零”
   return $cncap;
 }
?>