人民币金额数字转中文大写的php函数

<?
/**
  人民币金额数字转中文大写
  link：www.jiaochengji.com
  date：2013-2-28
*/
function cny($ns) {
static $cnums=array("零","壹","贰","叁","肆","伍","陆","柒","捌","玖"),
$cnyunits=array("圆","角","分"),
$grees=array("拾","佰","仟","万","拾","佰","仟","亿");
list($ns1,$ns2)=explode(".",$ns,2);
$ns2=array_filter(array($ns2[1],$ns2[0]));
$ret=array_merge($ns2,array(implode("",_cny_map_unit(str_split($ns1),$grees)),""));
$ret=implode("",array_reverse(_cny_map_unit($ret,$cnyunits)));
return str_replace(array_keys($cnums),$cnums,$ret);
}

function _cny_map_unit($list,$units) {
$ul=count($units);
$xs=array();
foreach (array_reverse($list) as $x) {
$l=count($xs);
if ($x!="0" || !($l%4)) $n=($x=='0'?'':$x).($units[($l-1)%$ul]);
else $n=is_numeric($xs[0][0])?$x:'';
array_unshift($xs,$n);
}
return $xs;
}
?>