将以下代码放入您的 iframe 中,您将获得登录的用户 ID,然后检查其约束。
<?php
function parse_signed_request($signed_request , $secret ) {
$signed_request = $signed_request ? $signed_request : $_REQUEST['signed_request'];
$secret = $secret ? $secret : your_app_secret;
list($encoded_sig, $payload) = explode('.', $signed_request, 2);
// decode the data
$sig = base64_url_decode($encoded_sig);
$data = json_decode(base64_url_decode($payload), true);
if (strtoupper($data['algorithm']) !== 'HMAC-SHA256') {
error_log('Unknown algorithm. Expected HMAC-SHA256');
return null;
}
// check sig
$expected_sig = hash_hmac('sha256', $payload, $secret, $raw = true);
if ($sig !== $expected_sig) {
error_log('Bad Signed JSON signature!');
return null;
}
return $data;
}
function base64_url_decode($input) {
return base64_decode(strtr($input, '-_', '+/'));
}
$request=$_REQUEST['signed_request'];
$appsecret = 'your_app_secret_key';
$new = parse_signed_request($request , $appsecret );
echo $new['user_id'];