forked from thenbsp/wechat
/
OAuth.php
164 lines (132 loc) · 4.13 KB
/
OAuth.php
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<?php
namespace Thenbsp\Wechat;
use Thenbsp\Wechat\Util\Http;
use Thenbsp\Wechat\Exception\OAuthException;
/**
* 网页授权
* Created by thenbsp (thenbsp@gmail.com)
* Created at 2015/07/23
*/
class OAuth
{
/**
* 获取授权 URL 接口
*/
const AUTHORIZE_URL = 'https://open.weixin.qq.com/connect/oauth2/authorize';
/**
* 获取用户 Token 接口
*/
const GET_TOKEN_URL = 'https://api.weixin.qq.com/sns/oauth2/access_token';
/**
* 刷新用户 Token 接口
*/
const REFRESH_TOKEN_URL = 'https://api.weixin.qq.com/sns/oauth2/refresh_token';
/**
* 检测用户 AccessToken 是否有效接口
*/
const ACCESS_TOKEN_IS_VALID = 'https://api.weixin.qq.com/sns/auth';
/**
* 获取用户信息接口
*/
const USERINFO_URL = 'https://api.weixin.qq.com/sns/userinfo';
/**
* 公众号 APP ID
*/
protected $appid;
/**
* 公众号 APP SECRET
*/
protected $appsecret;
/**
* 构造方法
*/
function __construct($appid, $appsecret)
{
$this->appid = $appid;
$this->appsecret = $appsecret;
}
/**
* 直接跳转到授权页
*/
public function authorize($redirect_uri, $scope = 'snsapi_base', $state = null)
{
header('Location: '.$this->getAuthorizeURL($redirect_uri, $scope, $state));
}
/**
* 获取授权 URL (http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html)
*/
public function getAuthorizeURL($redirect_uri, $scope = 'snsapi_base', $state = null)
{
$params = [];
$params['appid'] = $this->appid;
$params['redirect_uri'] = $redirect_uri;
$params['response_type'] = 'code';
$params['scope'] = $scope;
$params['state'] = $state;
return static::AUTHORIZE_URL.'?'.http_build_query($params);
}
/**
* 授权回调（通过 Code 换取 Token）
*/
public function getToken($code)
{
$params = array(
'appid' => $this->appid,
'secret' => $this->appsecret,
'code' => $code,
'grant_type' => 'authorization_code'
);
$response = Http::get(static::GET_TOKEN_URL, $params);
if( isset($response->access_token) &&
isset($response->openid) ) {
return $response;
}
throw new OAuthException($response->errcode.': '.$response->errmsg);
}
/**
* 刷新 Token
*/
public function refreshToken($token)
{
$params = array(
'appid' => $this->appid,
'refresh_token' => $token->refresh_token,
'grant_type' => 'refresh_token'
);
$response = Http::get(static::REFRESH_TOKEN_URL, $params);
if( isset($response->access_token) &&
isset($response->openid) ) {
return $response;
}
throw new OAuthException($response->errcode.': '.$response->errmsg);
}
/**
* 检测用户 AccessToken 是否有效
*/
public function accessTokenIsValid($token)
{
$params = array(
'openid' => $token->openid,
'access_token' => $token->access_token
);
$response = Http::get(static::ACCESS_TOKEN_IS_VALID, $params);
return isset($response->errmsg) && ($response->errmsg === 'ok');
}
/**
* 获取当前（已授权）用户信息
*/
public function getUser($token)
{
$params = array(
'access_token' => $token->access_token,
'openid' => $token->openid
);
$response = Http::get(static::USERINFO_URL, $params);
if( isset($response->openid) &&
isset($response->nickname) &&
isset($response->headimgurl) ) {
return $response;
}
throw new OAuthException($response->errcode.': '.$response->errmsg);
}
}