php 阿拉伯数字转中文大写金额

// 阿拉伯数字转中文大写金额
function NumToCNMoney($num,$mode = true,$sim = true){
	if(!is_numeric($num)) return '含有非数字非小数点字符！';
	$char    = $sim ? array('零','一','二','三','四','五','六','七','八','九')
	: array('零','壹','贰','叁','肆','伍','陆','柒','捌','玖');
	$unit    = $sim ? array('','十','百','千','','万','亿','兆')
	: array('','拾','佰','仟','','萬','億','兆');
	$retval  = $mode ? '元':'点';
	//小数部分
	if(strpos($num, '.')){
		list($num,$dec) = explode('.', $num);
		$dec = strval(round($dec,2));
		if($mode){
			$retval .= "{$char[$dec['0']]}角{$char[$dec['1']]}分";
		}else{
			for($i = 0,$c = strlen($dec);$i < $c;$i++) {
				$retval .= $char[$dec[$i]];
			}
		}
	}
	//整数部分
	$str = $mode ? strrev(intval($num)) : strrev($num);
	for($i = 0,$c = strlen($str);$i < $c;$i++) {
		$out[$i] = $char[$str[$i]];
		if($mode){
			$out[$i] .= $str[$i] != '0'? $unit[$i%4] : '';
				if($i>1 and $str[$i]+$str[$i-1] == 0){
				$out[$i] = '';
			}
				if($i%4 == 0){
				$out[$i] .= $unit[4+floor($i/4)];
			}
		}
	}
	$retval = join('',array_reverse($out)) . $retval;
	return $retval;
}


echo (NumToCNMoney(2.55)."
");
echo (NumToCNMoney(2.55,1,0)."
");
echo (NumToCNMoney(7965)."
");
echo (NumToCNMoney(7965,1,0)."
");
echo (NumToCNMoney(155555555.68)."
");
echo (NumToCNMoney(155555555.68,1,0)."
");
echo (NumToCNMoney(0.8888888)."
");
echo (NumToCNMoney(0.8888888,1,0)."
");
echo (NumToCNMoney(99999999999)."
");
echo (NumToCNMoney(99999999999,1,0)."
");