null to isset

shabeer-ali-m · Jun 27, 2020 · 1f25df8 · 1f25df8
1 parent 92f115b
commit 1f25df8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/SuperCache/SuperCache.php b/src/SuperCache/SuperCache.php
@@ -97,7 +97,7 @@ private function attrSave()
      */
     public static function cache($key)
     {
-        if (is_null(self::$instance[$key])) {
+        if (isset(self::$instance[$key])) {
             self::$instance[$key] = new self($key);
         }
         return self::$instance[$key];