php实现paypal 授权登录

php实现paypal授权登录<?php/***@projectpaypallogin*@authorjiangjianhe*@date2015-04-03*/classpaypallogin{//

php实现paypal 授权登录

<?php
 
/**
 * @project paypal login
 * @author jiangjianhe 
 * @date 2015-04-03
 */
 
 
class paypallogin
{
 
 //沙箱token链接
 private $_sanbox_oauth2_auth_uri = 'https://www.sandbox.paypal.com/webapps/auth/protocol/openidconnect/v1/authorize';
 private $_live_oauth2_auth_uri = 'https://www.paypal.com/webapps/auth/protocol/openidconnect/v1/authorize';
 
 private $_acquire_user_profile_sandbox_url = 'https://www.sandbox.paypal.com/webapps/auth/protocol/openidconnect/v1/userinfo?schema=openid&access_token=';
 private $_acquire_user_profile_live_url = 'https://www.paypal.com/webapps/auth/protocol/openidconnect/v1/userinfo?schema=openid&access_token=';
 
 //沙箱token链接
 private $_token_service_sandbox_url = 'https://www.sandbox.paypal.com/webapps/auth/protocol/openidconnect/v1/tokenservice'; 
 private $_token_service_live_url = 'https://www.paypal.com/webapps/auth/protocol/openidconnect/v1/tokenservice';
 private $_sanbox_flag = true;
 private $_client_id = null;
 private $_client_secret = null;
 private $_redirect_uri = null;
 private $_state = '';
 private $_scope = 'openid email phone profile address https://uri.paypal.com/services/paypalattributes'; //scope 参数决定访问令牌的访问权限 各个参数详解url;:https://www.paypal-biz.com/product/login-with-paypal/index.html#configureButton
 
 public $token = null;
 public $protocol = "http";
 
 
 /**
 * @name 构造函数
 * @param $flag 是否沙箱环境
 */
 public function __construct($redirect_uri, $client_id,$client_secret,$scope,$state,$flag = true)
 {
 $this->_sanbox_flag = $flag;
 $this->_redirect_uri = $redirect_uri;
 $this->_client_id = $client_id;
 $this->_client_secret = $client_secret;
 $this->_scope = $scope;
 $this->_state = $state;
 }
 
 /**
 * 创建paypal request url
 * @return string
 */
 public function create_request_url()
 {
 $oauth2_auth_uri = $this->_sanbox_flag ? $this->_sanbox_oauth2_auth_uri :$this->_live_oauth2_auth_uri;
 $url = $oauth2_auth_uri.'?'.
 http_build_query(
 array(
 'client_id' => $this->_client_id, //通过应用程序注册流程获得的唯一客户端标识符。必需。
 'response_type' =>'code', //表明授权代码被发送回应用程序返回URL。为了使访问令牌在用户代理中不可见， 建议使用<code>code</code>一值。如果您希望在响应中同时收到授权代码和 id_token ，请传递 code+id_token。另一个可能的 response_type 值是 token ——大部分由javascript和移动客户端等公共客户端使用。
 'scope' => $this->_scope,//;implode(',', $this->scope),
 'redirect_uri' => urlencode($this->_redirect_uri), //应用程序的返回URL。结构、主机名和端口必须与您在注册应用程序时设置的返回URL相符。
 'nonce' => time().rand(), //不透明的随机标识符，可减少重放攻击风险。简单的函数是：(timestamp + Base64 encoding (random\[16\]))。
 'state' => $this->_state, // CSRF验证码
 )
 );
 return $url;
 }
 
 /**
 * get PayPal access token
 * @param string $code ?
 * @return string access token
 */
 public function acquire_access_token($code ) {
 $accessToken = null;
 
 try {
 $postvals = sprintf("client_id=%s&client_secret=%s&grant_type=authorization_code&code=%s",$this->_client_id,$this->_client_secret,$code);
 if($this->_sanbox_flag)
 $ch = curl_init($this->_token_service_sandbox_url);
 else
 $ch = curl_init($this->_token_service_live_url); 
 
 $options = array(
 CURLOPT_POST => 1,
 CURLOPT_VERBOSE => 1,
 CURLOPT_POSTFIELDS => $postvals,
 CURLOPT_RETURNTRANSFER => 1,
 CURLOPT_SSL_VERIFYPEER => FALSE,
 //CURLOPT_SSLVERSION => 2
 );
 
 curl_setopt_array($ch, $options);
 $response = curl_exec($ch);
 $error = curl_error($ch);
 
 curl_close( $ch );
 
 if (!$response ) {
 throw new Exception( "Error retrieving access token: " . curl_error($ch));
 }
 $jsonResponse = json_decode($response );
 
 if ( isset( $jsonResponse->access_token) ) {
 $accessToken = $jsonResponse->access_token;
 }
 
 } catch( Exception $e) {
 throw new Exception($e->getMessage(), 1);
 }
 
 return $accessToken;
 }
 
 /**
 * get the PayPal user profile, decoded
 * @param string $accessToken
 * @return object
 */
 public function acquire_paypal_user_profile($accessToken ) {
 try {
 if($this->_sanbox_flag)
 $url = $this->_acquire_user_profile_sandbox_url . $accessToken;
 else
 $url = $this->_acquire_user_profile_live_url . $accessToken; 
 
 $ch = curl_init( $url );
 $options = array(
 CURLOPT_RETURNTRANSFER => 1,
 CURLOPT_SSL_VERIFYPEER => FALSE,
 //CURLOPT_SSLVERSION => 2
 );
 curl_setopt_array($ch, $options);
 
 $response = curl_exec($ch);
 $error = curl_error( $ch);
 curl_close( $ch );
 
 if (!$response ) 
 {
 return false;
 }
 return json_decode($response);
 } catch( Exception $e ) {
 return false;
 }
 }
}
?>

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php paypal 授权登录