'/topics/IPO', 'notification'=> array( 'title'=> $title, 'body'=> $msg )); } else { $fields = array( 'to' => '/topics/IPO', 'notification'=> array( 'title'=> $title, 'body'=> $msg, 'click_action' => $activity )); } $payload = json_encode($fields); curl_setopt($curl_session, CURLOPT_URL,$path_to_fcm); curl_setopt($curl_session, CURLOPT_POST, true); curl_setopt($curl_session, CURLOPT_HTTPHEADER, $headers); curl_setopt($curl_session, CURLOPT_RETURNTRANSFER, true); curl_setopt($curl_session, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($curl_session, CURLOPT_POSTFIELDS, $payload); $res = curl_exec($curl_session); curl_close($curl_session);