Customer-Service/application/index/controller/Lang.php

<?php
namespace app\index\controller;

use think\Controller;
use think\Exception;
use think\Log;

class Lang extends Controller
{


    /**
     * 国际化
     *
     * @access public
     * @return string
     */
    public function lang()
    {
        $code = -2;
        $data = [];
        $msg  = lang('EC01002');
        try {
            // 获取头部信息.
            $header = headerInfo();
            // 成功则返回成功.
            if (in_array($header['lang'], LANG)) {
                $code = 1;
                $msg  = lang('MC01001');
                cookie('think_var', $header['lang']);
                // 失败则返回错误信息.
            } else {
                $msg = lang('EC01001');
            }
        } catch (Exception $e) {
            Log::write($e->getMessage(), 'error');
        }//end try

        return json(['code' => $code, 'data' => $data, 'msg' => $msg]);

    }//end lang()


}