PHP 阿拉伯数字转中文表述

如101转成一百零一

function num2cn($number) {
    $number = intval ( $number );
    $capnum = array (
            "零",
            "一",
            "二",
            "三",
            "四",
            "五",
            "六",
            "七",
            "八",
            "九" 
    );
    $capdigit = array (
            "",
            "十",
            "百",
            "千",
            "万" 
    );
    
    $data_arr = str_split ( $number );
    $count = count ( $data_arr );
    for($i = 0; $i < $count; $i ++) {
        $d = $capnum [$data_arr [$i]];
        $arr [] = $d != '零' ? $d . $capdigit [$count - $i - 1] : $d;
    }
    $cncap = implode ( "", $arr );
    
    $cncap = preg_replace ( "/(零)+/", "0", $cncap ); // 合并连续“零”
    $cncap = trim ( $cncap, '0' );
    $cncap = str_replace ( "0", "零", $cncap ); // 合并连续“零”
    $cncap == '一十' && $cncap = '十';
    $cncap == '' && $cncap = '零';
    return $cncap;
}