Use array_key_exists() as an extra check

Author: KartaviK

src/Enum.php

@@ -177,7 +177,7 @@ public static function search($value)
     public static function __callStatic($name, $arguments)
     {
         $array = static::toArray();
-        if (array_key_exists($name, $array)) {
+        if (isset($array[$name]) || array_key_exists($name, $array)) {
             return new static($array[$name]);
         }