[5.3] Arr::sort(): limited use of underlying Collection fixed

src/Illuminate/Support/Arr.php

@@ -452,13 +452,13 @@ public static function set(&$array, $key, $value)
     }
 
     /**
-     * Sort the array using the given callback.
+     * Sort the array using the given callback or "dot" notation.
      *
      * @param  array  $array
-     * @param  callable  $callback
+     * @param  callable|string  $callback
      * @return array
      */
-    public static function sort($array, callable $callback)
+    public static function sort($array, $callback)
     {
         return Collection::make($array)->sortBy($callback)->all();
     }

tests/Support/SupportArrTest.php

@@ -358,20 +358,25 @@ public function testSet()
 
     public function testSort()
     {
-        $array = [
+        $unsorted = [
             ['name' => 'Desk'],
             ['name' => 'Chair'],
         ];
 
-        $array = array_values(Arr::sort($array, function ($value) {
-            return $value['name'];
-        }));
-
         $expected = [
             ['name' => 'Chair'],
             ['name' => 'Desk'],
         ];
-        $this->assertEquals($expected, $array);
+
+        // sort with closure
+        $sortedWithClosure = array_values(Arr::sort($unsorted, function ($value) {
+            return $value['name'];
+        }));
+        $this->assertEquals($expected, $sortedWithClosure);
+
+        // sort with dot notation
+        $sortedWithDotNotation = array_values(Arr::sort($unsorted, 'name'));
+        $this->assertEquals($expected, $sortedWithDotNotation);
     }
 
     public function testSortRecursive()