<?php if (is_single()): ?>
    <div class="col-left">
    <?php if(is_user_logged_in()):
        //more前の記事 TextAgroup
        $content = get_the_content();
        $content = preg_replace("|(<img[^>]+>)|si","",$content);
        echo $content;
    else:
        //more後の記事 TextBgroup
        global $more;
        $more = 0;
        $content = get_the_content('' , FALSE, '');
        $content = preg_replace("|(<img[^>]+>)|si","",$content);
        echo $content;
        if ($pos=strpos($post->post_content, '<!--more-->')):
            echo '<a href="#">ログイン</a>';
        endif;
    endif; ?>
    </div>

    <div class="col-right">
    <?php if(is_user_logged_in()):
     // ImgAgroupおよびImgBgroup？？？？？？？？
    else:
     // ImgAgroupのみ
    post_linkingthumbs();
    endif; ?>
    </div>
<?php else: ?>
    <h1 class="page-title"><?php the_title(); ?></h1>
    <?php the_content(); ?>
<?php endif; ?>

/**--------------------------------------------
* the_content内の画像のみ取得 functions.php内
---------------------------------------------**/
function post_linkingthumbs($maxcnt='-1', $imgsize=array()){
    global $post;
    $args = array(
        'post_type' => 'attachment',
        'numberposts' => $maxcnt,   //取得する画像数（-1の場合は全て）
        'post_status' => inherit,
        'post_parent' => $post->ID,
        'post_mime_type' => 'image',
        'orderby' => 'menu_order ID',
    );
    $attachments = get_posts($args);
    if (is_array($attachments)) {

    //取得したサムネイル数分出力
        foreach ($attachments as $attachment) {
        echo '<div class="col-md-4 col-sm-6"><a class="fancybox-button zoomer" href="'.$attachment->guid.'" title="'.$attachment->post_title.'"><span class="overlay-zoom margin-bottom-10">'.wp_get_attachment_image($attachment->ID,'attachment-thumbnail', true, array('class'=>'img-responsive')). '<div class="zoom-icon"></div></span></a></div>';
        }
    }
}