From c09a0fdb92a4aa42552723b2238713bc9a9b1adb Mon Sep 17 00:00:00 2001
From: Taylor Otwell <taylor@laravel.com>
Date: Sun, 14 Jan 2018 09:00:04 -0600
Subject: [PATCH] use foreach

---
 src/Illuminate/Support/Collection.php | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/Illuminate/Support/Collection.php b/src/Illuminate/Support/Collection.php
index 9b4dc4acbccf..ca87db9e64cc 100644
--- a/src/Illuminate/Support/Collection.php
+++ b/src/Illuminate/Support/Collection.php
@@ -884,16 +884,19 @@ public function mapToDictionary(callable $callback)
     {
         $dictionary = [];
 
-        $this->each(function ($item, $key) use (&$dictionary, $callback) {
+        foreach ($this->items as $key => $item) {
             $pair = $callback($item, $key);
+
             $key = key($pair);
+
             $value = reset($pair);
 
             if (! isset($dictionary[$key])) {
                 $dictionary[$key] = [];
             }
+
             $dictionary[$key][] = $value;
-        });
+        }
 
         return new static($dictionary);
     }