QQ登录OAuth2.0 php接入类

/**

 *

 * qq登录

 * @author http://www.heui.org

 *

 */

class Oauth_qq

{

  private static $_instance;

  private $config = array();

 

  private function __construct($config)

  {

    $this->Oauth_qq($config);

  }

 

  public static function getInstance($config)

  {

    if(!isset(self::$_instance))

    {

      $c=__CLASS__;

      self::$_instance = new $c($config);

    }

    return self::$_instance;

  }

 

  private function Oauth_qq($config)

  {

    $this->config = $config;

    $_SESSION["appid"]    = $this->config['appid'];

    $_SESSION["appkey"]   = $this->config['appkey'];

    $_SESSION["callback"] = $this->config['callback'];

    $_SESSION["scope"] = "get_user_info,add_share,list_album,add_album,upload_pic,add_topic,add_one_blog,add_weibo";

  }

 

  function login()

  {

    $_SESSION['state'] = md5(uniqid(rand(), TRUE)); //CSRF protection

    $login_url = "https://graph.qq.com/oauth2.0/authorize?response_type=code&client_id="

    . $_SESSION["appid"] . "&redirect_uri=" . urlencode($_SESSION["callback"])

    . "&state=" . $_SESSION['state']

    . "&scope=".$_SESSION["scope"];

    header("Location:$login_url");

  }

 

  function callback()

  {

    if($_REQUEST['state'] == $_SESSION['state']) //csrf

    {

      $token_url = "https://graph.qq.com/oauth2.0/token?grant_type=authorization_code&"

      . "client_id=" . $_SESSION["appid"]. "&redirect_uri=" . urlencode($_SESSION["callback"])

      . "&client_secret=" . $_SESSION["appkey"]. "&code=" . $_REQUEST["code"];

 

      $response = get_url_contents($token_url);

      if (strpos($response, "callback") !== false)

      {

        $lpos = strpos($response, "(");

        $rpos = strrpos($response, ")");

        $response  = substr($response, $lpos + 1, $rpos - $lpos -1);

        $msg = json_decode($response);

        if (isset($msg->error))

        {

          echo "<h3>error:</h3>" . $msg->error;

          echo "<h3>msg  :</h3>" . $msg->error_description;

          exit;

        }

      }

 

      $params = array();

      parse_str($response, $params);

 

      $_SESSION["access_token"] = $params["access_token"];

    }

    else

    {

      echo("The state does not match. You may be a victim of CSRF.");

    }

  }

 

  function get_openid()

  {

    $graph_url = "https://graph.qq.com/oauth2.0/me?access_token="

    . $_SESSION['access_token'];

 

    $str  = get_url_contents($graph_url);

    if (strpos($str, "callback") !== false)

    {

      $lpos = strpos($str, "(");

      $rpos = strrpos($str, ")");

      $str  = substr($str, $lpos + 1, $rpos - $lpos -1);

    }

 

    $user = json_decode($str);

    if (isset($user->error))

    {

      echo "<h3>error:</h3>" . $user->error;

      echo "<h3>msg  :</h3>" . $user->error_description;

      exit;

    }

 

    //set openid to session

    return $_SESSION["openid"] = $user->openid;

  }

 

  function get_user_info()

  {

    $get_user_info = "https://graph.qq.com/user/get_user_info?"

    . "access_token=" . $_SESSION['access_token']

    . "&oauth_consumer_key=" . $_SESSION["appid"]

    . "&openid=" . $_SESSION["openid"]

    . "&format=json";

 

    $info = get_url_contents($get_user_info);

    $arr = json_decode($info, true);

 

    return $arr;

  }

 

  public function __clone()

  {

    trigger_error('Clone is not allow' ,E_USER_ERROR);

  }

 

}

 

/* 公用函数 */

if (!function_exists("do_post"))

{

  function do_post($url, $data)

  {

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

    curl_setopt($ch, CURLOPT_POST, TRUE);

    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

    curl_setopt($ch, CURLOPT_URL, $url);

    $ret = curl_exec($ch);

 

    curl_close($ch);

    return $ret;

  }

}

if (!function_exists("get_url_contents"))

{

  function get_url_contents($url)

  {

    if (ini_get("allow_url_fopen") == "1")

    return file_get_contents($url);

 

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

    curl_setopt($ch, CURLOPT_URL, $url);

    $result =  curl_exec($ch);

    curl_close($ch);

 

    return $result;

  }

}

使用实例：

$config['appid']    = '';

$config['appkey']   = '';

$config['callback'] = '';

$o_qq = Oauth_qq::getInstance($config);

 

//then

$o_qq->login();

//or

$o_qq->callback();

$o_qq->get_openid();

$o_qq->get_user_info();

原文：http://www.heui.org/archives/454