PHP对接QQ接口实现社交圈子的实现方法解析

// 定义授权页面的URL
$authorizeUrl = 'https://graph.qq.com/oauth2.0/authorize';

// 设置应用的appid和appkey
$appid = 'YOUR_APPID';
$appkey = 'YOUR_APPKEY';

// 生成随机的state值，用于校验请求的合法性
$state = md5(uniqid(rand(), TRUE));

// 将state存入session中
$_SESSION['state'] = $state;

// 拼接授权页面的URL
$redirectUrl = 'http://yourdomain.com/callback.php';
$scope = 'get_user_info';
$authorizeUrl .= '?response_type=code&client_id=' . $appid . '&redirect_uri=' . urlencode($redirectUrl) . '&state=' . $state . '&scope=' . $scope;

// 重定向到授权页面
header('Location: ' . $authorizeUrl);

// 定义回调页面的URL
$callbackUrl = 'http://yourdomain.com/callback.php';

// 验证state值的合法性
if ($_GET['state'] != $_SESSION['state']) {
  exit('Invalid state');
}

// 获取授权码
$code = $_GET['code'];

// 获取access token和openid
$tokenUrl = 'https://graph.qq.com/oauth2.0/token?grant_type=authorization_code&client_id=' . $appid . '&client_secret=' . $appkey . '&code=' . $code . '&redirect_uri=' . urlencode($callbackUrl);
$response = file_get_contents($tokenUrl);
parse_str($response, $params);
$access_token = $params['access_token'];

$meUrl = 'https://graph.qq.com/oauth2.0/me?access_token=' . $access_token;
$response = file_get_contents($meUrl);
$openid = substr($response, strpos($response, "openid":"") + 9, strpos($response, ""}"));