'Choose a car',
'label' => 'Example',
'searchMode' => true,
'items' => [
[
'category' => 'Russia',
'categoryItems' => [
['id' => 1, 'title' => 'Москва', 'value' => 1],
'Саратов',
'Волгоград',
'Донецк',
]
],
[
'category' => 'USA',
'categoryItems' => [
'Alabama',
'Texas',
'Los-Angeles',
]
],
]
])
?>
PHP CG-Select Category Example