微信和QQ网页授权登录

一：微信授权

//用户授权

public function is_weixin(){

$url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=xxxxxxxxxxxxxxx&redirect_uri=http://xxx.xxxxx.com/index.php/privilege/getWeixinUser&response_type=code&scope=snsapi_userinfo&state=1#wechat_redirect";
redirect($url);
}

上面的$url 中有5个get参数，前面2个get参数的值由我们指定,即appid 和 redirect_uri

　　appid="微信APP_ID"

　　redirect_uri="回调地址"

以上例子中 is_weixin 方法执行后浏览器会访问 redirect_uri所填写的地址，也就是会执行privilege中的getWeixinUser方法

public function getWeixinUser(){
$appid = "xxxxxxxxxxxxxxxxxxxxxxx";
$secret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
$code = $_GET["code"];
$get_token_url = ‘https://api.weixin.qq.com/sns/oauth2/access_token?appid=‘.$appid.‘&secret=‘.$secret.‘&code=‘.$code.‘&grant_type=authorization_code‘;

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$get_token_url);
curl_setopt($ch,CURLOPT_HEADER,0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
$res = curl_exec($ch);
curl_close($ch);
$json_obj = json_decode($res,true);

//根据openid和access_token查询用户信息
$access_token = $json_obj[‘access_token‘];
$openid = $json_obj[‘openid‘];
$get_user_info_url = ‘https://api.weixin.qq.com/sns/userinfo?access_token=‘.$access_token.‘&openid=‘.$openid.‘&lang=zh_CN‘; 

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$get_user_info_url);
curl_setopt($ch,CURLOPT_HEADER,0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
$res = curl_exec($ch);
curl_close($ch); 

//解析json
$user_obj = json_decode($res,true);

// array(
// [openid] => o3ushwi5OiaBfCNA2F187BKPdnfU
// [nickname] => xxx
// [sex] => 1
// [language] => zh_CN
// [city] => 深圳
// [province] => 广东
// [country] => 中国
// [headimgurl] => http://wx.qlogo.cn/mmopen/qibdIUkiaxRnic3D9icdBOonZxI3HibH1sP1xKchqhlDOnQibVuxhfNxHVvRJCrfz9jOkR5uZxsWiaToMIQQ0spkRNfG325j8NaGO67/0
// );

}

getWeixinUser方法中最终得到的$user_obj就是一个包含了用户微信基本信息的数组。

二：QQ授权