\WP_Stager_Integration\Event::get_single_event_id(): int|null

Full Code

/**
 * Gets the event ID of the currently viewed event page.
 *
 * @return int|null The event ID, or null if not on a single event page.
 */
public static function get_single_event_id() {

    // Bail if not on a single event page
    if ( ! self::is_single_event() ) {
        return null;
    }

    // Get data
    $event_data = (array) (self::get_single_event_data() ?: array());
    $event_id   = (int) ($event_data[ 'id' ] ?? 0);

    if ( ! $event_id ) {
        return null;
    }

    return $event_id;
}