book_admin/application/main/helper/NumberHelper.php

<?php
/**
 * Created by PhpStorm.
 * User: Bear
 * Date: 2018/12/13
 * Time: 下午1:45
 */

namespace app\main\helper;


class NumberHelper
{
    /**
     * 获取两位小数的浮点数
     * @param     $number
     * @param int $precision
     * @return float|int
     */
    public static function getFloat($number, $precision = 2)
    {
        if (is_numeric($number)) {
            return round($number, $precision);
        }

        return 0;
    }
}