微信小程序获取 openID

灰太狼 2021-12-18 20:17 435阅读 0赞

1.通过 wx.login接口获取code如：  
wx.login(\{  
    success: res => \{  
      console.log("code",res)  
      // 发送 res.code 到后台换取 openId, sessionKey, unionId  
      var wx\_code=res.code

wx.request(\{  
 url: 'https://spreaddisc.checkba.net/index.php',  
                   method: "POST",  
                    data: \{  
                      wx\_code:wx\_code  
                    \},  
                    header: \{  
                      'content-type': 'application/x-www-form-urlencoded' // 默认值  
                    \},  
                    success: function (res) \{  
                      //这里可以获取数据；  
                      console.log("openid", res);

var data = res.data;  
                      var length = data.length;

\}  
PHP代码： index.php

$code=I("post.wx\_code");  
     $appid="\*\*\*\*\*\*\*\*\*\*\*\*";  
     $secret="\*\*\*\*\*\*\*\*\*";  
 $api="https://api.weixin.qq.com/sns/jscode2session?appid=\{$appid\}&secret=\{$secret\}&js\_code=\{$code\}&grant\_type=authorization\_code"; //调用官方接口  
     $wx\_code=$this->httpGet($api);  
     $data=json\_decode($wx\_code,true);  
     $openid=$data\["openid"\]; //用户的openid    
    echo $openid;

httpGet函数：  
public function httpGet($url)\{  
    $curl = curl\_init();  
    curl\_setopt($curl, CURLOPT\_RETURNTRANSFER, true);  
    curl\_setopt($curl, CURLOPT\_TIMEOUT,500);  
    curl\_setopt($curl, CURLOPT\_SSL\_VERIFYPEER, true);  
    curl\_setopt($curl, CURLOPT\_SSL\_VERIFYHOST , true);  
    curl\_setopt($curl, CURLOPT\_URL, $url);  
    $res = curl\_exec($curl);  
    curl\_close($curl);  
    return $res;  
\}  
\---------------------   
作者：he\_Lucian   
来源：CSDN   
原文：https://blog.csdn.net/u012729832/article/details/79650531   
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