From b5473636464a7218e5e1b2dd41b0677798c383b0 Mon Sep 17 00:00:00 2001
From: David Ferbr <david@ferbr.cz>
Date: Mon, 2 Dec 2019 14:17:48 +0100
Subject: [PATCH] make doSaveDependingOnFiles() nullable again addresses
 https://github.com/Kdyby/DoctrineCache/issues/23

---
 src/Cache.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Cache.php b/src/Cache.php
index d66ac38..cb940b8 100644
--- a/src/Cache.php
+++ b/src/Cache.php
@@ -102,8 +102,9 @@ protected function doSave($id, $data, $lifeTime = 0): bool
 	 * @param string[] $files
 	 * @param int $lifeTime
 	 */
-	protected function doSaveDependingOnFiles(string $id, $data, array $files, int $lifeTime = 0): bool
+	protected function doSaveDependingOnFiles(string $id, $data, array $files, int $lifeTime = null): bool
 	{
+		$lifeTime = (int) $lifeTime;
 		$dp = [NCache::TAGS => ['doctrine'], NCache::FILES => $files];
 		if ($lifeTime > 0) {
 			$dp[NCache::EXPIRE] = time() + $lifeTime;