微信授权验证类

微信auth授权验证类，在别人的基础上修改的，有用的上的参考下

/**
* 微信授权相关接口
*
*
*/

class wechatauth {

//高级功能-》开发者模式-》获取
private $app_id = 'wxa0c4*************';
private $app_secret = 'e095b6dc**********************';

/**
* 获取微信授权链接
*
* @param string $redirect_uri 跳转地址
* @param mixed $state 参数
*/
public function get_authorize_url($redirect_uri = '', $state = '')
{
$redirect_uri = urlencode($redirect_uri);
return "https://open.weixin.qq.com/connect/oauth2/authorize?appid={$this->app_id}&redirect_uri={$redirect_uri}&response_type=code&scope=snsapi_userinfo&state={$state}#wechat_redirect";
}

/**
* 获取授权token
*
* @param string $code 通过get_authorize_url获取到的code
*/
public function get_access_token($app_id = '', $app_secret = '', $code = '')
{
$token_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={$this->app_id}&secret={$this->app_secret}&code={$code}&grant_type=authorization_code";
$token_data = $this->http($token_url);

if($token_data[0] == 200)
{
return json_decode($token_data[1], TRUE);
}

return FALSE;
}

/**
* 获取授权后的微信用户信息
*
* @param string $access_token
* @param string $open_id
*/
public function get_user_info($access_token = '', $open_id = '')
{
if($access_token && $open_id)
{
$info_url = "https://api.weixin.qq.com/sns/userinfo?access_token={$access_token}&openid={$open_id}&lang=zh_CN";
$info_data = $this->http($info_url);

if($info_data[0] == 200)
{
return json_decode($info_data[1], TRUE);
}
}

return FALSE;
}

/**
* 验证授权
*
* @param string $access_token
* @param string $open_id
*/
public function check_access_token($access_token = '', $open_id = '')
{
if($access_token && $open_id)
{
$info_url = "https://api.weixin.qq.com/sns/auth?access_token={$access_token}&openid={$open_id}&lang=zh_CN";
$info_data = $this->http($info_url);

if($info_data[0] == 200)
{
return json_decode($info_data[1], TRUE);
}
}

return FALSE;
}


//curl
public function http($url, $method, $postfields = null, $headers = array(), $debug = false)
{
$ci = curl_init();
/* Curl settings */
curl_setopt($ci, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, 30);
curl_setopt($ci, CURLOPT_TIMEOUT, 30);
curl_setopt($ci, CURLOPT_RETURNTRANSFER, true);

switch ($method) {
case 'POST':
curl_setopt($ci, CURLOPT_POST, true);
if (!empty($postfields)) {
curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);
$this->postdata = $postfields;
}
break;
}
curl_setopt($ci, CURLOPT_URL, $url);
curl_setopt($ci, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ci, CURLINFO_HEADER_OUT, true);

$response = curl_exec($ci);
$http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE);

if ($debug) {
echo "=====post data======\r\n";
var_dump($postfields);

echo '=====info=====' . "\r\n";
print_r(curl_getinfo($ci));

echo '=====$response=====' . "\r\n";
print_r($response);
}
curl_close($ci);
return array($http_code, $response);
}

}放出输出的demo，有用的上的可以参考//微信认证链接
public function wxurl(){
import('MyClass.Wechatauth',APP_PATH);
$Wechat = new wechatauth();
$token = session('token'); //查看是否已经授权
if (!empty($token)) {
print_r($token);
$state = $Wechat->check_access_token($token['access_token'],$token['openid']); //检验token是否可用(成功的信息："errcode":0,"errmsg":"ok")
print_r($state);
}
$url = $Wechat->get_authorize_url('http://twx.vjiankang.org/wsite/test/wxrurl','1'); //此处链接授权后，会跳转到下方处理
echo '授权';

}

//微信返回字符串
public function wxrurl(){
import('MyClass.Wechatauth',APP_PATH);
$Wechat = new wechatauth();
print_r($_GET); //授权成功后跳转到此页面获取的信息

$token = $Wechat->get_access_token('','',$_GET['code']); //确认授权后会，根据返回的code获取token
print_r($token);
session('token',$token); //保存授权信息

$user_info = $Wechat->get_user_info($token['access_token'],$token['openid']); //获取用户信息
print_r($user_info);

}需要注意的是，我们用于返回的url，需要在微信公众平台-》开发者-》auth认证里修改为同一域名下

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