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//////////////////////////
// for single.php
//////////////////////////

// 1.
<?php posts_nav_link(); ?>

// 2.
<?php previous_posts_link('<<前のページ'); ?>
<?php next_posts_link('次のページ >>'); ?>

// 3.
<?php previous_posts_link("%link",'<img src="" />') ?>
<?php next_post_link("%link",'<img src="" />') ?>

//////////////////////////
// for single-xxx.php
//////////////////////////

// Next/Previous Post Link Plus for WordPress
// http://www.ambrosite.com/plugins/next-previous-post-link-plus-for-wordpress

<?php previous_post_link_plus(array('format' => '%link', 'link' => '<img src="画像パス">', 'in_same_tax' => true)); ?>
<?php next_post_link_plus(array('format' => '%link', 'link' => '<img src="画像パス">', 'in_same_tax' => true)); ?>

// リンクがない場合にもイメージを出したい。

<ul>
  <li>
    <?php if(!previous_post_link_plus(array('format' => '%link', 'link' => '<img src="/img/common/btn-prev.png" alt="PREV" width="55" height="20">', 'in_same_tax' => true )) ):
    ?>
      <img src="/img/common/btn-prev.png" alt="PREV" width="55" height="20" class="disable">
    <?php endif; ?>
  </li>
  <li class="add-bor"><a href=""><img src="/img/common/btn-index.png" alt="INDEX" width="81" height="20"></a></li>
  <li>
    <?php if(!next_post_link_plus(array('format' => '%link', 'link' => '<img src="/img/common/btn-next.png" alt="NEXT" width="55" height="20">', 'in_same_tax' => true )) ):
    ?>
      <img src="/img/common/btn-next.png" alt="NEXT" width="55" height="20" class="disable">
    <?php endif; ?>
  </li>
</ul>

// !小カテゴリー内でページングしたい場合はin_catsを使うといい感じ
// 'in_cats' => $cat_id


single.php
    <div class="pager">
    <div class="btn-morelist"><a href="/careerblog/">一覧へ戻る</a></div>
      <ul class="clearfix">
        <li id="btn-prev">
          <?php if (get_previous_post()):?>
          <?php previous_post_link('%link','PREV',TRUE); ?>
          <?php else: ?>
          <span>PREV</span>
          <?php endif; ?>
        </li>
        <li id="btn-next">
          <?php if (get_next_post()):?>
          <?php next_post_link('%link','NEXT',TRUE); ?>
          <?php else: ?>
          <span>NEXT</span>
          <?php endif; ?>
        </li>
      </ul>
    </div><!-- / .pager -->

index.php
    <div class="pager">
      <ul class="clearfix">
        <li id="btn-prev">
        <?php if( $prev_link_tag = get_previous_posts_link() ):?>
        <?php previous_posts_link('PREV');?>
        <?php else: ?>
        <span>PREV</span>
        <?php endif;?>
        </li>
        <li id="btn-next">
        <?php if( $next_link_tag = get_next_posts_link() ):?>
            <?php next_posts_link('NEXT');?>
        <?php else: ?>
          <span>NEXT</span>
        <?php endif;?>
</li>
      </ul>
    </div><!-- / .pager -->

// < 1 2 3 4 5 > 型

<?php if( $wp_query->max_num_pages > 1): ?>
	<nav id="pager">
		<ul class="page_navi">
			    
      <?php global $wp_rewrite;
      $paginate_base = get_pagenum_link(1);
      if(strpos($paginate_base, '?') || ! $wp_rewrite->using_permalinks()){
          $paginate_format = '';
          $paginate_base = add_query_arg('paged','%#%');
      }
      else{
          $paginate_format = (substr($paginate_base,-1,1) == '/' ? '' : '/') .
          user_trailingslashit('page/%#%/','paged');;
          $paginate_base .= '%_%';
      }
      echo paginate_links(array(
          'base' => $paginate_base,
          'format' => $paginate_format,
          'total' => $wp_query->max_num_pages,
          'mid_size' => 4,
          'current' => ($paged ? $paged : 1),
          'prev_text' => '<img src="/img/news/arr-pager_prev.png" alt="PREV" width="6" height="11">',
          'next_text' => '<img src="/img/news/arr-pager_next.png" alt="NEXT" width="6" height="11">',
          'type'      => 'plain'
      )); ?>

		</ul>
	</nav>

<?php endif; ?>