From 5c314155b11b6c6cb2ad0c05ee4a03296e8e2c67 Mon Sep 17 00:00:00 2001
From: Marco Miltenburg <marco@virtualpages.nl>
Date: Mon, 1 Aug 2016 18:36:16 +0200
Subject: [PATCH] In case $maxLifetime is null (which it is by default), the
 $lifetime will never be used and null will always be returned. Fixes issue
 zendframework/zf1#503.

---
 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 135ff6ad8d..9fe079d160 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 > 0 && $fastLifetime > $maxLifetime) {
             return $maxLifetime;
         }