php小写数字转人民币大写数字的函数

人民币数字转人民币汉字大写，是比较常见的一个需求，所以在这里分享一个函数，也算作个记录，以备自己以后啥时候会用到！

function num2rmb ($num) {
    $c1 = "零壹贰叁肆伍陆柒捌玖";
    $c2 = "分角元拾佰仟万拾佰仟亿";
    $num = round($num, 2);
    $num = $num * 100;
    if (strlen($num) > 10) {
        return "oh,sorry,the number is too long!";
    }
    $i = 0;
    $c = "";
    while (1) {
        if ($i == 0) {
            $n = substr($num, strlen($num)-1, 1);
        } else {
            $n = $num % 10;
        }
        $p1 = substr($c1, 3 * $n, 3);
        $p2 = substr($c2, 3 * $i, 3);
        if ($n != '0' || ($n == '0' && ($p2 == '亿' || $p2 == '万' || $p2 == '元'))) {
            $c = $p1 . $p2 . $c;
        } else {
            $c = $p1 . $c;
        }
        $i = $i + 1;
        $num = $num / 10;
        $num = (int)$num;
        if ($num == 0) {
            break;
        }
    }
    $j = 0;
    $slen = strlen($c);
        while ($j