Can php develop small programs?-PHP Problem-php.cn

Can php develop small programs?

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Release： 2023-02-27 11:18:01

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Can php develop small programs?

First, take a look at the WeChat login flow chart (Recommended learning: PHP video tutorial)

Can php develop small programs? Steps: Obtain the login credentials (code) of the current logged-in WeChat user on the client. Use this credential to exchange the WeChat server for the WeChat user's unique identifier (openid) and session key (session_key). Quote WeChat encryption and decryption to obtain user information.

Note:

1. No login verification is performed.

2. For reference encryption and decryption, the path must be correct.

    //未授权用户，请求微信接口，进行授权，获取用户信息
    public function saveUser()
    {
        $appid  =  "自己的appid" ;
        $code   =   $this->input->post(&#39;code&#39;);
 
        if (empty($code)){
            return $this->fail(&#39;&#39;,&#39;code不能为空&#39;);
        }
        $encryptedData   =   $this->input->post(&#39;encryptedData&#39;);
        if (empty($encryptedData)){
            return $this->fail(&#39;&#39;,&#39;encryptedData不能为空&#39;);
        }
        $iv   =   $this->input->post(&#39;iv&#39;);
        if (empty($iv)){
            return $this->fail(&#39;&#39;,&#39;iv不能为空&#39;);
        }
 
 
        $apiData = $this->getApiData($code);
 
        if(!isset($apiData[&#39;errcode&#39;])){
            $sessionKey = $apiData[&#39;session_key&#39;];
            //获取sessionKey  进行解密
            $userifo = new WXBizDataCrypt($appid, $sessionKey);
            $errCode = $userifo->decryptData($encryptedData, $iv, $data );
 
            //保存
            if ($errCode == 0) {
                $data = json_decode($data,true);
                $userData = [
                    &#39;nickname&#39; =>$data[&#39;nickName&#39;],
                    &#39;headimg&#39;  =>$data[&#39;avatarUrl&#39;],
                    &#39;unionid&#39;  =>$data[&#39;unionId&#39;],
                    &#39;openid&#39;  =>$data[&#39;openId&#39;],
                    &#39;c_time&#39;  =>time(),
                ];
                $result = $this->AppUserModel->get([&#39;openid&#39;=>$data[&#39;openId&#39;]]);
 
                if ($result){
                    $this->AppUserModel->update($userData,[&#39;openid&#39;=>$data[&#39;openId&#39;]]);
                    $returnData[&#39;uid&#39;]=$result[&#39;id&#39;];
                    return $this->success($returnData,&#39;已授权&#39;);
                }else{
                    $userDataId = $this->AppUserModel->add($userData);
                    if ($userDataId){
                        $returnData[&#39;uid&#39;]=$userDataId;
                        return $this->success($returnData,&#39;已授权&#39;);
                    }else{
                        return $this->fail(&#39;&#39;,&#39;授权失败&#39;);
                    }
                }
            }
        }else{
            return $this->fail($apiData,&#39;获取用户信息失败&#39;);
        }
    }

Copy after login

//获取openid
    public function getApiData($code)
    {
        $appid  =  "自己的appid" ;
        $secret =   "自己的secret";
        $URL = "https://api.weixin.qq.com/sns/jscode2session?appid=$appid&secret=$secret&js_code=$code&grant_type=authorization_code";
        $apiData=file_get_contents($URL);
        return json_decode($apiData,true);
    }

Copy after login

Multiple acquisitions were not avoided. Verify before logging in.

//获取用户是否已经授权
    public function userId()
    {
 
 
        $code   =   $this->input->get(&#39;code&#39;);
        if (empty($code)){
            return $this->fail(&#39;&#39;,&#39;code不能为空&#39;);
        }
 
        $apiData = $this->getApiData($code);
        if (!isset($apiData[&#39;errcode&#39;])){
            $openID= $apiData[&#39;openid&#39;];
            $userData = $this->AppUserModel->get([&#39;openid&#39;=>$openID]);
            if (empty($userData)) {
                return $this->fail(&#39;&#39;,&#39;未授权&#39;);
            }else{
 
                //这边保存sessionKey ，方便后面手机号码授权
                $sessionKey = $apiData[&#39;session_key&#39;];
                $mc = &load_cache(&#39;redis&#39;);
                $mc->save(&#39;session_key&#39;, $sessionKey, 3600);
                $returnData = [
                    &#39;uid&#39;=>$userData[&#39;id&#39;],
                    &#39;type&#39;=>$userData[&#39;type&#39;]
                ];
                return $this->success($returnData,&#39;已授权&#39;);
            }
        }else {
            return $this->fail(&#39;&#39;,&#39;获取openid失败&#39;);
        }
 
    }

Copy after login

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