takatoshi

    <?php elseif(is_404()) : ?>
      <h1>404 NOT FOUND ERROR!!</h1>
      <p>指定したページが見つかりませんでした。</p>
    <?php endif; ?>
  <?php endif; ?>
</div><!-- /#content -->

takatoshi

//変更前
<ul>
<?php  while ($r->have_posts()) : $r->the_post(); ?>
<li><a href="<?php the_permalink() ?>" title="<?php echo esc_attr(get_the_title() ? get_the_title() : get_the_ID()); ?>"><?php if ( get_the_title() ) the_title(); else the_ID(); ?></a></li>
<?php endwhile; ?>
</ul>

//変更後
<ul>
<?php  while ($r->have_posts()) : $r->the_post(); ?>

takatoshi

function SearchFilter($query) {
  if ($query->is_search) {
    $query->set('post_type', 'post');
  }
  return $query;
}
add_filter('pre_get_posts', 'SearchFilter');

if (isset($_GET['s'])) {
  $_GET['s'] = mb_convert_kana($_GET['s'], 's', 'UTF-8');

takatoshi

  <?php else: ?>
    <?php if (is_search()) : ?>
      <?php echo $search_result; ?>
    <?php elseif(is_404()) : ?>
    <?php endif; ?>
  <?php endif; ?>
</div><!-- /#content -->

takatoshi

<div id="content">
  <?php if (is_search()) : ?>
    <?php $allsearch =& new WP_Query("s=$s&showposts=-1"); ?>
    <?php $key = wp_specialchars($s, 1); ?>
    <?php $count = $allsearch->post_count; ?>
    <?php $search_result = '<p id="search_result">『<span class="search">'.$key.'</span>』で検索した結果、<span class="search">'.$count.'</span>件がヒットしました。</p>'; ?>
  <?php endif; ?>
  <?php if (have_posts()) : ?>
    <?php if (is_search()) : ?>
      <?php echo $search_result; ?>

takatoshi

<form role="search" method="get" id="searchform" action="<?php echo home_url( '/' ); ?>">
  <input type="text" value="<?php echo $_GET['s']; ?>" name="s" id="s" />
  <input type="submit" id="searchsubmit" value="" />
</form>

takatoshi

  </div><!-- /#content -->
  <div id="sidebar">
    <ul>
      <?php dynamic_sidebar(); ?>
    </ul>
  </div><!-- /#sidebar -->
</div><!-- /#container -->

takatoshi

register_sidebar();

takatoshi

  <?php the_content('続きを読む'); ?>
  <?php comments_template(); ?>
</article><!-- /.article -->

takatoshi

<?php if (!is_single()) : ?>
  <?php wp_pagenavi(); ?>
<?php endif; ?>