访问授权地址，这里以仅获取openid的地址为例
https://open.weixin.qq.com/connect/oauth2/authorize?appid=wxa25d4c0c6777fe9c&redirect_uri=https%3A%2F%2Fsmyj.foxweixin.cn%2Findex%2Findex%2Fbindsupplier&response_type=code&scope=snsapi_base&state=123#wechat_redirect
获取openid
public function bindsupplier()
{
$code = $_GET['code'];
if(empty($code)){
echo "授权失败，无code";die;
}
$url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".config('weixin.appid')."&secret=".config('weixin.secret')."&code=".$code."&grant_type=authorization_code";
$res = http_request($url);
$data = json_decode($res,true);
if(empty($data['openid'])){
echo "授权失败";die;
}
$this->assign('openid', $data['openid']);
return $this->fetch();
}提示文字，用于直接在php页面输出
<meta http-equiv='Content-Type' content='text/html; charset=utf-8'> <meta name='viewport' content='width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no'> <div style='width:80%;float:left;margin-left:10%;text-align:center;font-size:20px;line-height:40px;margin-top:200px;color:#777;'> 授权失败，请重新扫码 </div>
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