Add ksort to ArrayObject util

Author: mikeymike

src/Utils/ArrayObject.php

@@ -100,6 +100,13 @@ public function collapse(): self
         return new static($results);
     }
 
+    public function ksort(): self
+    {
+        $data = $this->getArrayCopy();
+        ksort($data);
+        return new self($data);
+    }
+
     /**
      * Reduce the items to a single value.
      *

test/Util/ArrayObjectTest.php

@@ -175,4 +175,21 @@ public function testEach(): void
 
         $this->assertEquals($original, $result);
     }
+
+    public function testKstort()
+    {
+        $arrayObject = new ArrayObject([
+            'z' => 'more test data',
+            'a' => 'test data',
+            't' => 'yup moar test data'
+        ]);
+
+        $expected = [
+            'a' => 'test data',
+            't' => 'yup moar test data',
+            'z' => 'more test data',
+        ];
+
+        $this->assertEquals($expected, $arrayObject->ksort()->getArrayCopy());
+    }
 }