QQ登录api

 <?php
 namespace Api\Member;
 class QQConnect{
      /**
      * 获取QQconnect Login 跳转到的地址值
      * @return array 返回包含code state
      *
 **/
  public function login($app_id, $callback, $scope){
         $_SESSION['state'] = md5(uniqid(rand(), TRUE)); //CSRF protection
         $login_url = "https://graph.qq.com/oauth2.0/authorize?response_type=code&client_id="
             .$app_id. "&redirect_uri=" . urlencode($callback)
             . "&state=" . $_SESSION['state']
             . "&scope=".urlencode($scope);
 //显示出登录地址
          header('Location:'.$login_url);
     }
     /**
      * 获取access_token值
      * @return array 返回包含access_token,过期时间的数组
      * */
 private function get_token($app_id,$app_key,$code,$callback,$state){
         if($state !== $_SESSION['state']){
 return false;
 exit();
         }
            $url = "https://graph.qq.com/oauth2.0/token";
             $param = array(
                 "grant_type"    =>    "authorization_code",
                 "client_id"     =>    $app_id,
                 "client_secret" =>    $app_key,
                 "code"          =>    $code,
                 "state"         =>    $state,
                 "redirect_uri"  =>    $callback
             );
             $response = $this->get_url($url, $param);
             if($response == false) {
                 return false;
             }
             $params = array();
             parse_str($response, $params);
             return $params["access_token"];
 }

     /**
      * 获取client_id 和 openid
      * @param $access_token access_token验证码
      * @return array 返回包含 openid的数组
      * */
     private  function get_openid($access_token) {
         $url = "https://graph.qq.com/oauth2.0/me";
         $param = array(
             "access_token"    => $access_token
         );
         $response  = $this->get_url($url, $param);
         if($response == false) {
             return false;
         }
         if (strpos($response, "callback") !== false) {
             $lpos = strpos($response, "(");
             $rpos = strrpos($response, ")");
             $response  = substr($response, $lpos + 1, $rpos - $lpos -1);
         }
         $user = json_decode($response);
         if (isset($user->error) || $user->openid == "") {
             return false;
         }
         return $user->openid;
     }
     /**
      * 获取用户信息
      * @param $client_id
      * @param $access_token
      * @param $openid
      * @return array 用户的信息数组
      * */
     public function get_user_info($app_id,$token,$openid){
 $url = 'https://graph.qq.com/user/get_user_info?oauth_consumer_key='.$app_id.'&access_token='.$token.'&openid='.$openid.'&format=json';
         $str = $this->get_url($url);
         if($str == false) {
         return false;
         }
         $arr = json_decode($str,true);
         return $arr;
 }

      /**
      * 请求URL地址，返回callback得到返回字符串
      * @param $url qq提供的api接口地址
      * */

     public function callback($app_id, $app_key, $callback) {
     $code = $_GET['code'];
     $state = $_GET['state'];
     $token = $this->get_token($app_id,$app_key,$code,$callback,$state);
     $openid = $this->get_openid($token);
     if(!$token || !$openid) {
     return false;
     exit();
     }
        return array('openid' => $openid, 'token' => $token);
     }

     /*
      * HTTP GET Request
     */
     private  function get_url($url, $param = null) {
     if($param != null) {
     $query = http_build_query($param);
     $url = $url . '?' . $query;
     }
     $ch = curl_init();
     if(stripos($url, "https://") !== false){
     curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
     curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
     }

     curl_setopt($ch, CURLOPT_URL, $url);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );
     $content = curl_exec($ch);
     $status = curl_getinfo($ch);
     curl_close($ch);
     if(intval($status["http_code"]) == 200) {
     return $content;
     }else{
     echo $status["http_code"];
     return false;
     }
     }

     /*
      * HTTP POST Request
     */
     private  function post_url($url, $params) {
     $ch = curl_init();
     if(stripos($url, "https://") !== false) {
     curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
     curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
     }

     curl_setopt($ch, CURLOPT_URL, $url);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );
     curl_setopt($ch, CURLOPT_POST, true);
     curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
     $content = curl_exec($ch);
     $status = curl_getinfo($ch);
     curl_close($ch);
     if(intval($status["http_code"]) == 200) {
     return $content;
     } else {
     return false;
     }
     }
 }