php/app/utils/ArrayUtil.php

<?php

namespace app\utils;

class ArrayUtil
{
    /**
     * 将数组内的 keys下划线转驼峰
     *
     * @param array $arr
     * @param string $separator
     *
     * @return array
     */
    public static function underline2CamelArr(array $arr, string $separator = '_'): array
    {
        $result = [];
        if (!empty($arr)) {
            foreach ($arr as $words => $value) {
                if (strpos($words, $separator) !== false) {
                    $words = $separator . str_replace($separator, " ", strtolower($words));
                    $result[ltrim(str_replace(" ", "", ucwords($words)), $separator)] = $value;
                } else {
                    $result[$words] = $value;
                }
            }
        }
        return $result;
    }

    /**
     * 根据 code 获取 name
     * @param $code
     * @param array $data
     * @return mixed|null
     */
    public static function getEnumNameByCode($code, array $data = [])
    {
        foreach ($data as $datum) {
            if (isset($datum['code']) && isset($datum['name']) && $datum['code'] === $code) {
                return $datum['name'];
            }
        }
        return null;
    }

    /**
     * 获取数组维度 几维数组
     * @param $array
     * @return int
     */
    public static function array_depth($array): int
    {
        if (!is_array($array)) return 0;
        $max_depth = 1;
        foreach ($array as $value) {
            if (is_array($value)) {
                $depth = self::array_depth($value) + 1;
                if ($depth > $max_depth) {
                    $max_depth = $depth;
                }
            }
        }
        return $max_depth;
    }
}