yusheng-php/application/api/controller/Wechat.php

<?php

namespace app\api\controller;

use think\Controller;
use think\Db;
use think\Log;

class Wechat extends Controller
{

    private $appId = 'wx0f0c0c0c0c0c0c0c';
    private $appSecret = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';

    /**
     * 核心：用code换取openid的方法
     * @param string $code 微信回调带来的code
     * @return string|bool 成功返回openid，失败返回false
     */
    private function exchangeCodeForOpenId()
    {
        $code = input('code', 0);

        // 构建请求URL
        $url = "https://api.weixin.qq.com/sns/oauth2/access_token?" .
            "appid={$this->appId}&" .
            "secret={$this->appSecret}&" .
            "code={$code}&" .
            "grant_type=authorization_code";

        Log::info('[微信授权] 请求微信接口URL：' . $url);

        // 发送请求
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);

        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

        if (curl_errno($ch)) {
            Log::error('[微信授权] 请求失败：' . curl_error($ch));
            curl_close($ch);
            return ['code' => 0, 'msg' => '[微信授权] 请求失败：' . curl_error($ch), 'data' => null];
        }

        curl_close($ch);

        Log::info('[微信授权] 微信返回原始数据：' . $response);

        // 解析返回的JSON
        $data = json_decode($response, true);

        if (empty($data) || isset($data['errcode'])) {
            Log::error('[微信授权] 解析失败或返回错误', $data);
            return false;
            return ['code' => 0, 'msg' => '[微信授权] 解析失败或返回错误', 'data' => null];
        }

        // 成功获取到openid
        return ['code' => 1, 'msg' => '获取成功', 'data' => ['openid' => $data['openid']]];
    }


    /*
     * 获取用户信息
     * @param string $user_code 用户的user_code
     * @return array|bool 成功返回用户信息，失败返回false
     */
    public function getUserInfo($user_code)
    {
        $user_info = db::name('user')
            ->field('id user_id,nickname,avatar,mobile')
            ->where(['u.user_code' => $user_code,'u.status' => ['<>',0]])->find();
        if(!$user_info){
            return ['code' => 0, 'msg' => '用户不存在或已注销', 'data' => null];
        }
        return ['code' => 1, 'msg' => '获取成功', 'data' => $user_info];
    }


    /*
     * 可充值的金额
     * @param string $user_code 用户的user_code
     * @return array|bool 充值金额，失败返回false
     */
    public function getRechargeMoney($user_code)
    {
        $money_coin = [
            ['coin' => '1', 'money' => '0.10'],
            ['coin' => '60', 'money' => '6.00'],
            ['coin' => '1000', 'money' => '100.00'],
        ];
        return ['code' => 1, 'msg' => '获取成功', 'data' => $money_coin];
    }

}