From f2f220c7158fca98b9d136c53d890f63aca2f4f9 Mon Sep 17 00:00:00 2001
From: Johannes Meyer <johannes.meyer@icinga.com>
Date: Thu, 14 Jan 2021 15:07:44 +0100
Subject: [PATCH] Timestamp: Properly handle non-convertible text

---
 library/Icingadb/Model/Behavior/Timestamp.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/library/Icingadb/Model/Behavior/Timestamp.php b/library/Icingadb/Model/Behavior/Timestamp.php
index 3a624d5d..b29b3d62 100644
--- a/library/Icingadb/Model/Behavior/Timestamp.php
+++ b/library/Icingadb/Model/Behavior/Timestamp.php
@@ -24,7 +24,12 @@ class Timestamp extends PropertyBehavior
         }
 
         if (! ctype_digit($value)) {
-            $value = strtotime($value);
+            $timestamp = strtotime($value);
+            if ($timestamp === false) {
+                return $value;
+            } else {
+                $value = $timestamp;
+            }
         }
 
         return $value * 1000.0;