代码很少 //获取code$appid='xxxxxx';$redirect_uri = urlencode ('http://xxxxxxxxxxxx');$url ="https://open.weixin.qq.com/connect/oauth2/authorize?appid={
   $appid}&redirect_uri={
   $redirect_uri}&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect";header("Location:".$url);

if (!empty($_GET['code'])){                                                $appid  = C('APPID'); $secret = C('SECRET'); $code = $_GET['code']; //通过code换取token $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$appid."&secret=".$secret."&code=".$code."&grant_type=authorization_code"; $json = file_get_contents($url); $arr = json_decode($json,true); $token = $arr['access_token']; $openid = $arr['openid']; $url = "https://api.weixin.qq.com/sns/userinfo?access_token=$token&openid=$openid&lang=zh_CN"; //拿到token后获取用户基本信息 $json = file_get_contents($url); //获取微信用户基本信息 $arr = json_decode($json,true); }