From 3d92f0da62f26c5be30fb74874148666d453a828 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Linas=20Pa=C5=A1viestis?= <linas.pasviestis@gmail.com>
Date: Wed, 5 Apr 2017 13:30:05 +0300
Subject: [PATCH] added support for boolean keys in Collection::groupBy method

The following PR adds support for boolean keys when used in ``groupBy`` method of ```\lluminate\Support\Collection``. Related to #18672 problem.
---
 src/Illuminate/Support/Collection.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Illuminate/Support/Collection.php b/src/Illuminate/Support/Collection.php
index 48c8d3d3d231..5dc0c1541dd5 100644
--- a/src/Illuminate/Support/Collection.php
+++ b/src/Illuminate/Support/Collection.php
@@ -546,6 +546,10 @@ public function groupBy($groupBy, $preserveKeys = false)
             }
 
             foreach ($groupKeys as $groupKey) {
+                if (is_bool($groupKey)) {
+                    $groupKey = (int) $groupKey;
+                }
+
                 if (! array_key_exists($groupKey, $results)) {
                     $results[$groupKey] = new static;
                 }