From 11ffeeb729d1904800f2e13b947c66d51641e486 Mon Sep 17 00:00:00 2001
From: mahdy-nasr <mahdy.m.nasr@gmail.com>
Date: Wed, 15 Aug 2018 10:49:50 +0300
Subject: [PATCH] Fix infinite lifetime of the fastcache in
 Zend_Cache_Backend_TwoLevels class

---
 library/Zend/Cache/Backend/TwoLevels.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/Zend/Cache/Backend/TwoLevels.php b/library/Zend/Cache/Backend/TwoLevels.php
index 48835eb425..5c5ec2cb39 100644
--- a/library/Zend/Cache/Backend/TwoLevels.php
+++ b/library/Zend/Cache/Backend/TwoLevels.php
@@ -501,7 +501,7 @@ private function _getFastLifetime($lifetime, $priority, $maxLifetime = null)
             $fastLifetime = (int) ceil($lifetime / (11 - $priority));
         }
 
-        if ($maxLifetime >= 0 && $fastLifetime > $maxLifetime) {
+        if (($maxLifetime !== null) && $maxLifetime >= 0 && $fastLifetime > $maxLifetime) {
             return $maxLifetime;
         }