From 173d0f1934d08968a5d55a965777c107bae609a0 Mon Sep 17 00:00:00 2001
From: lip8up <lip8up@qq.com>
Date: Thu, 16 Sep 2021 02:53:51 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=20=3D=3D=20=E5=BC=95?=
 =?UTF-8?q?=E8=B5=B7=E7=9A=84=E4=BB=A3=E7=A0=81=E9=94=99=E8=AF=AF?=
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---
 src/Enum.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Enum.php b/src/Enum.php
index 56c7a72..da8da23 100644
--- a/src/Enum.php
+++ b/src/Enum.php
@@ -184,7 +184,7 @@ public static function allLabels(): array
     public static function valueToLabel($value = null)
     {
         $map = self::columnValues(1, 0);
-        return $value == null ? $map : ($map[$value] ?? null);
+        return $value === null ? $map : ($map[$value] ?? null);
     }
 
     /**
@@ -197,7 +197,7 @@ public static function valueToLabel($value = null)
     public static function labelToValue(string $label = null)
     {
         $map = self::columnValues(0, 1);
-        return $label == null ? $map : ($map[$label] ?? null);
+        return $label === null ? $map : ($map[$label] ?? null);
     }
 
     /**