獲取code值

$appid=’’ // 微信支付申請對應的公眾號的APPID
$urlCode=’’ // 處理code頁面 不能包含? 是微信可訪問頁面
$url="https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$appid."&redirect_uri=http://".$urlCode."&response_type=code&scope=snsapi_userinfo&state=123#wechat_redirect";
header('location:'.$url);

通過code獲取openid 查詢使用者資訊

$appid=’’ // 微信支付申請對應的公眾號appid
$secret=’’ // 微信支付申請對應的公眾號的APP Key

//第一步:取全域性access_token
$url="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$secret;
$token = getJson($url);

//第二步:取得openid
$oauth2Url="https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$appid."&secret=".$secret."&code=".$_GET['code']."&grant_type=authorization_code";
$oauth2 = getJson($oauth2Url);

//第三步:根據全域性access_token和openid查詢使用者資訊
$access_token = $token["access_token"];
$openid = $oauth2['openid'];
$get_user_info_url="https://api.weixin.qq.com/cgi-bin/user/info?access_token=".$access_token."&openid=".$openid."&lang=zh_CN";
$userinfo = getJson($get_user_info_url);
Var_dump($userinfo);

function getJson($url){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $output = curl_exec($ch);
    curl_close($ch);
    return json_decode($output, true);
}

function http_curl($url,$type='get',$res='json',$arr=''){
    //1.例項化curl
    $ch = curl_init();
    //2.設定curl引數
    curl_setopt($ch,CURLOPT_URL,$url);//要訪問的url地址
    curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);//對認證證書的來源檢查
    curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);//從證書中檢查SSL加密演算法是否存在
    if($type=='post'){
        curl_setopt($ch, CURLOPT_POST, 1);//傳送一個常規的POST請求
        curl_setopt($ch, CURLOPT_POSTFIELDS,$arr);//post提交的資料包
    }
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);//獲取的資訊以檔案流的形式返回

    //3.採集

    $output = curl_exec($ch);//執行操作
    if($res=='json'){
        if(curl_errno($ch)){
            return curl_error($ch);
        }else{
            return json_decode($output,true);
        }
    }
    //4.關閉
    curl_close($ch);
}
 

獲取資訊格式
array(16) {
[“subscribe”]=>
int(1)
[“openid”]=>
string(28) “oEuSRwmEaaw6ozzYlJPYIyOtg1co”
[“nickname”]=>
string(6) “微信名”
[“sex”]=>
int(2)
[“language”]=>
string(5) “zh_CN”
[“city”]=>
string(6) “市”
[“province”]=>
string(6) “省”
[“country”]=>
string(6) “中國”
[“headimgurl”]=>
string(137) ") “

修改粉絲標籤

    $url = "https://api.weixin.qq.com/cgi-bin/groups/members/update?access_token=".$access_token;
    $posts = array(
        "openid" => $openid,
        "to_groupid" => $label,
    );
    $post = json_encode($posts);
    $change = http_curl($url,'post','json',$post);