From 288b55662f9ff7ccf821dc93f496beea3aed8b57 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Sun, 25 Nov 2018 16:57:13 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E8=BF=9Bcache=E7=B1=BB?=
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---
 src/think/cache/Driver.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/think/cache/Driver.php b/src/think/cache/Driver.php
index e8425c2834..de7c8c5635 100644
--- a/src/think/cache/Driver.php
+++ b/src/think/cache/Driver.php
@@ -227,7 +227,7 @@ protected function getTagItem(string $tag): array
      * @param  mixed $data
      * @return string
      */
-    protected function serialize($data): string
+    protected function serialize($data)
     {
         if (is_scalar($data) || !$this->options['serialize']) {
             return $data;
@@ -244,7 +244,7 @@ protected function serialize($data): string
      * @param  string $data
      * @return mixed
      */
-    protected function unserialize(string $data)
+    protected function unserialize($data)
     {
         if ($this->options['serialize'] && 0 === strpos($data, self::$serialize[2])) {
             $unserialize = self::$serialize[1];