public function testXAIintersectWithKeyValueCallback() { $xao = new XArray(['x' => 1, 'ab' => 2, 'z' => 3]); $obj = $xao->xaintersect(['xy' => 5, 'z' => 11], 'length_compare_func', 'length_compare_func'); $this->assertEquals(['xy' => 5], (array) $obj); }