这可能吗?我实际上并不想管理他们的页面,我只是想知道他们是否是该页面的管理员,因此我们可以在Facebook应用程序中授予用户特殊权限。
答案 0 :(得分:1)
signed_request
(reference)内的页面标签时,Facebook会发送该信息:
<?php
if(!empty($_REQUEST["signed_request"])) {
$app_secret = "APP_SECRET";
$data = parse_signed_request($_REQUEST["signed_request"], $app_secret);
if (empty($data["page"]["admin"])) {
echo "You are not an admin!";
} else {
echo "Welcome Admin!";
}
}
function parse_signed_request($signed_request, $secret) {
list($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, '-_', '+/'));
}
?>