* Server-side rendering of the `core/calendar` block.
* Renders the `core/calendar` block on server.
* @param array $attributes The block attributes.
* @return string Returns the block content.
function render_block_core_calendar( $attributes ) {
$previous_monthnum = $monthnum;
if ( isset( $attributes['month'] ) && isset( $attributes['year'] ) ) {
$permalink_structure = get_option( 'permalink_structure' );
strpos( $permalink_structure, '%monthnum%' ) !== false &&
strpos( $permalink_structure, '%year%' ) !== false
// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited
$monthnum = $attributes['month'];
// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited
$year = $attributes['year'];
$wrapper_attributes = get_block_wrapper_attributes();
get_calendar( true, false )
// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited
$monthnum = $previous_monthnum;
// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited
* Registers the `core/calendar` block on server.
function register_block_core_calendar() {
register_block_type_from_metadata(
'render_callback' => 'render_block_core_calendar',
add_action( 'init', 'register_block_core_calendar' );