PHP Oauth授权和本地加密实现方法

<?php// qq登陆类class Sso{  const APP_ID="101334262";  const APP_KEY="xxxxxxxxxxxxxxx";  //初始化  public static function init(){    header("content-type:text/html;charset=utf-8");  }    //主函数  public static function main(){    //请求控制    $action=$_GET['action'];    if(!empty($action)){      Sso::$action();      return;    }        $par = 'grant_type=authorization_code'    . '&client_id='.Sso::APP_ID    . '&client_secret='.Sso::APP_KEY    . '&code='.$_REQUEST['code']    . '&redirect_uri='.urlencode('http://www.qingguow.cn/sso.php');    $rec=Sso::postUrlContents("https://graph.qq.com/oauth2.0/token",$par);    if(strpos($rec, 'access_token') !== false) {      parse_str($rec, $accessToken);      $openidJson=Sso::getUrlContents("https://graph.qq.com/oauth2.0/me?callback=callback&access_token={$accessToken['access_token']}");      $openidJson=str_replace("callback( ", "", $openidJson);      $openidJson=str_replace(");", "", $openidJson);      $openidJson=json_decode($openidJson,true);      header("location:sso.php?action=getQQinfo&openid={$openidJson['openid']}&access_token={$accessToken['access_token']}");    }  }  //获取用户信息  public static function getQQinfo(){    Sso::init();    $openid=$_GET['openid'];    $access_token=$_GET['access_token'];    $userJson=Sso::getUrlContents("https://graph.qq.com/user/get_user_info?openid={$openid}&access_token={$access_token}&oauth_consumer_key=".Sso::APP_ID);    $user=json_decode($userJson,true);    print_r($user);  }  //get方式请求数据  public static function getUrlContents($url){    $ch = curl_init();    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);    curl_setopt($ch, CURLOPT_HEADER, false);    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);    curl_setopt($ch, CURLOPT_URL, $url);    curl_setopt($ch, CURLOPT_REFERER, $url);    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);    $result = curl_exec($ch);    curl_close($ch);    return $result;  }  //post请求数据  public static function postUrlContents($url,$data = null){    $curl = curl_init();    curl_setopt($curl, CURLOPT_URL, $url);    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);    if (!empty($data)){    curl_setopt($curl, CURLOPT_POST, 1);    curl_setopt($curl, CURLOPT_POSTFIELDS, $data);    }    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);    $output = curl_exec($curl);    curl_close($curl);    return $output;  }}Sso::main();