您可以在下面找到用于显示搜索结果页面的模板。将代码添加到search.php 文件如果已安装WP-PageNavi 如果搜索结果包含10个以上的项目，那么您将看到分页。

<?php
/**
 * The template for displaying Search Results pages.
*/
get_header();
?>


<h2><?php printf( __( \'Search Results for: %s\', \'themedomain\' ), \'<strong>"\' . get_search_query() . \'"</strong>\' ); ?></h2>

<div class="posts">
    <?php
        global $paged;
        $s = $_GET[\'s\'];
        $post_types = array(\'post\', \'page\');
        $args=array(
            \'post_type\' => $post_types,
            \'post_status\' => \'publish\',
            \'s\' => $s,
            \'orderby\' => \'date\',
            \'order\' => \'desc\',
            \'posts_per_page\' => 10,
            \'paged\' => $paged
        );

        $wp_query = new WP_Query($args);
        if ($wp_query->have_posts()) : while($wp_query->have_posts()) : $wp_query->the_post();
    ?>
    <!-- post-box -->
    <article class="post-box">
        <div class="meta">
            <h3><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h3>
            <p><?php _e(\'Posted by\',\'themedomain\');?> <?php if (!get_the_author_meta(\'first_name\') && !get_the_author_meta(\'last_name\')) { the_author_posts_link(); } else { echo \'<a href="\'.get_author_posts_url(get_the_author_meta(\'ID\')).\'">\'.get_the_author_meta(\'first_name\').\' \'.get_the_author_meta(\'last_name\').\'</a>\'; } ?> <?php _e(\'&middot; on\',\'themedomain\');?> <?php echo get_the_time(\'F d, Y\'); ?> <?php _e(\'&middot; in\',\'themedomain\');?> <?php the_category(\', \') ?> <?php _e(\'&middot; with\',\'themedomain\');?> <?php comments_popup_link(__(\'0 Comments\', \'themedomain\'),__(\'1 Comment\', \'themedomain\'), __(\'% Comments\', \'themedomain\')); ?></p>
        </div>
        <?php the_excerpt(); ?>
        <p><a href="<?php the_permalink(); ?>"><?php _e(\'Continue Reading &rarr;\',\'themedomain\'); ?></a></p>
    </article>
    <?php 
        endwhile;
        endif;
    ?>
</div>
<!-- paging -->
<div class="paging">
    <ul>
        <?php
            if(function_exists(\'wp_pagenavi\')) { wp_pagenavi(); }                               
        ?>
    </ul>
</div>

根据您的代码尝试此表单：

<form action="<?php echo esc_url(home_url()); ?>" method="get">
  <li>
    <input class="search" type="text" name="s" id="s" 
           placeholder="Search" value="<?php the_search_query(); ?>">
  </li>
</form>