<?php

namespace core\components;

class PriceHelper extends \yii\base\Component{

    /**
     * @param $num
     * @param bool $mode
     * @return string
     * 将数字转换为中文大写数字
     */
    public static function num2zh($num,$mode=true){
        $char = array("零","壹","贰","叁","肆","伍","陆","柒","捌","玖");
        $dw = array("","拾","佰","仟","","萬","億","兆");
        $dec = "點";
        $retval = "";
        if($mode) {
            preg_match_all("/^0*(\d*)\.?(\d*)/", $num, $ar);
        }else {
            preg_match_all("/(\d*)\.?(\d*)/", $num, $ar);
        }
        if($ar[2][0] != "")
            $retval = $dec . self::num2zh($ar[2][0],false); //如果有小数，先递归处理小数
        if($ar[1][0] != "") {
            $str = strrev($ar[1][0]);
            for($i=0;$i<strlen($str);$i++) {
                $out[$i] = $char[$str[$i]];
                if($mode) {
                    $out[$i] .= $str[$i] != "0"? $dw[$i % 4] : "";
                    if($str[$i]+$str[$i] == 0)
                        $out[$i] = "";
                    if($i % 4 == 0)
                        $out[$i] .= $dw[4+floor($i/4)];
                }
            }
            $retval = join("",array_reverse($out)) . $retval;
        }
        return $retval;
    }
}