//金额转汉字大写
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;
}