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filter is not described

media_library_months_with_files filter-hook . WP 4.7.4

Allows overriding the list of months displayed in the media library.

By default (if this filter does not return an array), a query will be run to determine the months that have media items. This query can be expensive for large media libraries, so it may be desirable for sites to override this behavior.

Usage

add_filter( 'media_library_months_with_files', 'filter_function_name_5810' );
function filter_function_name_5810( $null ){
	// filter...

	return $null;
}
$null(array/null)
An array of objects with month and year properties, or null (or any other non-array value) for default behavior.

Where the hook is called

wp_enqueue_media()
wp-includes/media.php 3425
$months = apply_filters( 'media_library_months_with_files', null );

Where the hook is used (in WP core)

Does not used.