要显示按年度排列的每月存档，可以使用此代码。它每月检查WordPress是否有任何帖子，并创建存档。

<?php
    global $wpdb;
    $limit = 0;
    $year_prev = null;
    $months = $wpdb->get_results( "SELECT DISTINCT MONTH( post_date ) AS month ,  YEAR( post_date ) AS year, COUNT( id ) as post_count FROM $wpdb->posts WHERE post_status = \'publish\' and post_date <= now( ) and post_type = \'post\' GROUP BY month , year ORDER BY post_date DESC" );
    foreach( $months as $month ) :
        $year_current = $month->year;
        if ( $year_current != $year_prev ) {
            if ( $year_prev != null ) { ?>
            <?php } ?>
            <h3><a href="<?php bloginfo(\'url\') ?>/<?php echo $month->year; ?>/"><?php echo $month->year; ?></a></h3>
        <?php } ?>
        <li><a href="<?php bloginfo(\'url\') ?>/<?php echo $month->year; ?>/<?php echo date("m", mktime(0, 0, 0, $month->month, 1, $month->year)) ?>"><span class="archive-month"><?php echo date_i18n("F", mktime(0, 0, 0, $month->month, 1, $month->year)) ?></span></a></li>
        <?php $year_prev = $year_current;
        if( ++$limit >= 18 ) { break; }
    endforeach;
?>

<?php
    global $wpdb;
    $limit = 0;
    $year_prev = null;
    $months = $wpdb->get_results( "SELECT DISTINCT MONTH( post_date ) AS month ,  YEAR( post_date ) AS year, COUNT( id ) as post_count FROM $wpdb->posts WHERE post_status = \'publish\' and post_date <= now( ) and post_type = \'newses\' GROUP BY month , year ORDER BY post_date DESC" );
    foreach( $months as $month ) :
        $year_current = $month->year;
        if ( $year_current != $year_prev ) {
            if ( $year_prev != null ) { ?>
            <?php } ?>
            <dt><i class="fa fa-fw fa-plus-square-o" aria-hidden="true"></i><a href="<?php bloginfo(\'url\') ?>/<?php echo $month->year; ?>/"><?php echo $month->year; ?></a></dt>
        <?php } ?>
        <dd class="post_month"><a href="<?php bloginfo(\'url\') ?>/<?php echo $month->year; ?>/<?php echo date("m", mktime(0, 0, 0, $month->month, 1, $month->year)) ?>"><span class="archive-month"><?php echo date_i18n("F", mktime(0, 0, 0, $month->month, 1, $month->year)) ?></span></a></dd>
        <?php $year_prev = $year_current;
        if( ++$limit >= 18 ) { break; }
    endforeach;
?>