PHP版人民币大小写转换

<?php
//人民币大小写转换程序
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(isset($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++;
}
$chiao = $cent = "";
$zhen = "整";
if(isset($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";
$zhen="";
}

$cncap .= $chiao.$cent.$zhen;
$cncap=preg_replace("/(零)+/","); //合并连续“零”
return $cncap;
}
echo toCNcap(100002);
?>