"channel required"]); exit; } $uid = 0; $expireTime = time() + 3600; $token = RtcTokenBuilder::buildTokenWithUid( $appID, $appCertificate, $channelName, $uid, RtcTokenBuilder::ROLE_PUBLISHER, $expireTime ); echo json_encode([ "appId" => $appID, "token" => $token ]);