gistfile1.txt

// see https://carbonfields.net/docs/fields-select/
Field::make( 'select', 'crb_content_align', 'Text alignment' )
    ->add_options( 'emrezavarcbrgist2317' )
    
// see https://secure.php.net/manual/en/language.types.callable.php
function emrezavarcbrgist2317() {
  // see https://developer.wordpress.org/reference/functions/get_categories/
  $terms = get_categories( array(
    'fields'  => 'id=>name'
  ) );
  
  // see https://developer.wordpress.org/reference/functions/is_wp_error/
  if ( ! is_wp_error( $terms ) ) {
    return $terms;
  }
  
  return array();
}