php写的人民币数字转人民币大写的函数

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_spl

it($ns

1),$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;   

}