book_admin/application/common/helper/StringHelper.php

<?php
/**
 * Created by PhpStorm.
 * User: Bear
 * Date: 2019/1/14
 * Time: 下午4:43
 */

namespace app\common\helper;


class StringHelper
{
    //下划线格式改为驼峰格式
    public static function stringToCamel($string)
    {
        $list = explode('_', $string);
        foreach($list as $index => $item){
            if($index){
                $list[$index] = ucfirst($item);
            }
        }

        return implode('', $list);
    }

    /**
     * @return string
     */
    public static function processUniqueId()
    {
        return date('YmdHis') . '-' . md5(uniqid() . microtime(true));
    }
}