Сергей Ильин

$result = array_map(function($el) {
  return [
    'tag' => 'marker',
    'attributes' => [
      'id' => $el['id'],
      'name' => $el['title'],
      'address' => 'Конюшенная',
      'lat' => $el['lat'],
      'lng' => $el['lng'],
      'type' => $el['category']
    ]
  ];
}, $result);