no message

api/application/controllers/Alarm.php

@@ -404,6 +404,7 @@ class Alarm extends Base_Controller {
 		$phone = $this->input->post('phone',true);
 
 		$project = $this->input->post('project',true);
+		$project = $project === null ? '' : $project;
 
 		if ($phone === '' || $phone === null) exit(json_result('0607',$this->response['0607']));
 		if ($email === '' || $email === null) exit(json_result('0618',$this->response['0618']));