rest_is_array() WordPress Function

function rest_is_array( $maybe_array ) {
	if ( is_scalar( $maybe_array ) ) {
		$maybe_array = wp_parse_list( $maybe_array );
	}

	return wp_is_numeric_array( $maybe_array );
}
Uses	Description
wp-includes/functions.php:wp_parse_list()	Converts a comma- or space-separated list of scalar values to an array.
wp-includes/functions.php:wp_is_numeric_array()	Determines if the variable is a numeric-indexed array.
Used By	Description
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php:WP_REST_Posts_Controller::prepare_tax_query()	Prepares the ‘tax_query’ for a collection of posts.
wp-includes/rest-api.php:rest_validate_array_value_from_schema()	Validates an array value based on a schema.
wp-includes/rest-api.php:rest_filter_response_by_context()	Filters the response to remove any fields not available in the given context.