Added option to use ArrayAccess object in set method

Author: minwork

src/Arr.php

@@ -230,27 +230,27 @@ public static function getNestedElement($array, $keys, $default = null)
     /**
      * Alias of Arr::setNestedElement
      *
-     * @param array $array
+     * @param array|ArrayAccess $array Array or object implementing array access to set element on
      * @param mixed $keys Keys needed to access desired array element (for possible formats see getKeysArray method)
      * @param mixed $value Value to set
      * @return array Copy of an array with element set
      * @see Arr::setNestedElement()
      */
-    public static function set(array $array, $keys, $value): array
+    public static function set($array, $keys, $value): array
     {
         return self::setNestedElement($array, $keys, $value);
     }
 
     /**
      * Set array element specified by keys to the desired value (create missing keys if necessary)
      *
-     * @param array $array
+     * @param array|ArrayAccess $array Array or object implementing array access to set element on
      * @param mixed $keys Keys needed to access desired array element (for possible formats see getKeysArray method)
      * @param mixed $value Value to set
      * @return array Copy of an array with element set
      * @see Arr::getKeysArray()
      */
-    public static function setNestedElement(array $array, $keys, $value): array
+    public static function setNestedElement($array, $keys, $value): array
     {
         $result = $array;
         $keysArray = self::getKeysArray($keys);

test/Arr/ArrTest.php

@@ -186,6 +186,35 @@ public function testSetNestedElement($class)
         $this->assertSame(Arr::setNestedElement([], '[].[].[]', 'test'), Arr::set([], '[].[].[]', 'test'));
         $this->assertSame(Arr::setNestedElement($array, 'test.test2.test3', 'abc'), Arr::set($array, 'test.test2.test3', 'abc'));
         $this->assertSame(Arr::setNestedElement($array, 'key1.key2', ['key3' => 'test']), Arr::set($array, 'key1.key2', ['key3' => 'test']));
+
+        // Test ArrayAccess
+
+        $obj3 = new ArrayObject([
+            'c' => [
+                'd' => 1,
+            ],
+        ]);
+        $array = [
+            'test' => [
+                'a' => [
+                    'b' => $obj3,
+                    'test2'
+                ],
+            ],
+        ];
+
+        $array = $this->callMethod([$class, 'set'], $array, 'test.a.b.c.d', 2);
+        $this->assertSame(2, $array['test']['a']['b']['c']['d']);
+
+        $array = $this->callMethod([$class, 'set'], $array, 'test.a.b.foo', 'bar');
+        $this->assertSame('bar', $array['test']['a']['b']['foo']);
+
+        $array = $this->callMethod([$class, 'set'], $array, 'test.a.b.x.[]', 'xyz');
+        $this->assertSame('xyz', $array['test']['a']['b']['x'][0]);
+
+        // Test pure array object set
+        $obj3 = $this->callMethod([$class, 'set'], $obj3, 'c.[].test', true);
+        $this->assertSame(true, $obj3['c'][0]['test']);
     }
 
     /**