From 24d8b99eea88e0e5c12ed091e9fcb2a4b4c86f8f Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Tue, 29 Sep 2020 16:47:49 -0400
Subject: [PATCH] test for property_exists to quiet errors

---
 web/includes/Monitor.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/web/includes/Monitor.php b/web/includes/Monitor.php
index d1bd51509..fec452551 100644
--- a/web/includes/Monitor.php
+++ b/web/includes/Monitor.php
@@ -293,7 +293,7 @@ class Monitor extends ZM_Object {
   }
 
   function zmcControl( $mode=false ) {
-    if ( ! $this->{'Id'} ) {
+    if ( !(property_exists($this,'Id') and $this->{'Id'}) ) {
       Warning('Attempt to control a monitor with no Id');
       return;
     }
@@ -346,7 +346,7 @@ class Monitor extends ZM_Object {
   } // end function zmcControl
 
   function zmaControl($mode=false) {
-    if ( !$this->{'Id'} ) {
+    if ( ! (property_exists($this, 'Id') and $this->{'Id'}) ) {
       Warning('Attempt to control a monitor with no Id');
       return;
     }