* Server-side rendering of the `core/archives` block.
* Renders the `core/archives` block on server.
* @see WP_Widget_Archives
* @param array $attributes The block attributes.
* @return string Returns the post content with archives added.
function render_block_core_archives( $attributes ) {
$show_post_count = ! empty( $attributes['showPostCounts'] );
if ( ! empty( $attributes['displayAsDropdown'] ) ) {
$class .= ' wp-block-archives-dropdown';
$dropdown_id = esc_attr( uniqid( 'wp-block-archives-' ) );
$title = __( 'Archives' );
/** This filter is documented in wp-includes/widgets/class-wp-widget-archives.php */
$dropdown_args = apply_filters(
'widget_archives_dropdown_args',
'show_post_count' => $show_post_count,
$dropdown_args['echo'] = 0;
$archives = wp_get_archives( $dropdown_args );
switch ( $dropdown_args['type'] ) {
$label = __( 'Select Year' );
$label = __( 'Select Month' );
$label = __( 'Select Day' );
$label = __( 'Select Week' );
$label = __( 'Select Post' );
$label = esc_html( $label );
$block_content = '<label class="screen-reader-text" for="' . $dropdown_id . '">' . $title . '</label>
<select id="' . $dropdown_id . '" name="archive-dropdown" onchange="document.location.href=this.options[this.selectedIndex].value;">
<option value="">' . $label . '</option>' . $archives . '</select>';
'<div class="%1$s">%2$s</div>',
$class .= ' wp-block-archives-list';
/** This filter is documented in wp-includes/widgets/class-wp-widget-archives.php */
$archives_args = apply_filters(
'show_post_count' => $show_post_count,
$archives_args['echo'] = 0;
$archives = wp_get_archives( $archives_args );
$classnames = esc_attr( $class );
$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $classnames ) );
if ( empty( $archives ) ) {
__( 'No archives to show.' )
* Register archives block.
function register_block_core_archives() {
register_block_type_from_metadata(
'render_callback' => 'render_block_core_archives',
add_action( 'init', 'register_block_core_archives' );