解析错误:语法错误、意外$end - 第 91 行

我搜索了答案，发现缺少引号或括号会导致该错误。我已经检查了几次并添加了缺少的引号，但第 91 行位于底部，所以我无法弄清楚，除非它是"else:"我从上到下看了看，但我不确定哪个会导致错误。请借给我你的眼睛来发现问题所在。谢谢

<?php
if( ereg( '/[a-z-]+/[a-z]/$', $_SERVER['REQUEST_URI'])) {
$url_array = explode('/', $_SERVER['REQUEST_URI']); 
$alpha = $url_array[sizeof($url_array)-2];
$postids = $wpdb->get_col("
    SELECT p.ID
    FROM $wpdb->posts p
    WHERE p.post_title REGEXP '^" . $wpdb->escape($alpha) . "'
    AND p.post_status = 'publish' 
    AND p.post_type = 'book'
    AND p.post_date < NOW()
    ORDER BY p.post_title ASC"
);

if ($postids) {
  $args=array(
    'post__in' => $postids,
    'post_type' => 'list', 
    'post_status' => 'publish',
    'posts_per_page' => -1,
    'caller_get_posts'=> 1
  );
  $my_query = null;
  $my_query = new WP_Query($args);
  if( $my_query->have_posts() ) {
    while ($my_query->have_posts()) : $my_query->the_post(); ?>
    <div class="listing">
       <h3><a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></h3>
        <?php the_excerpt(); ?>             
    </div>
      <?php
    endwhile;
    }
  }
}
 else {
    query_posts(array('post_type'=>'list')); 
    if (have_posts()) : while (have_posts()) : the_post(); 
     ?>          
    <div class="listing">
     <h3><a href="<?php the_permalink(); ?>" rel="bookmark"><?php the_title(); ?></a> </h3>
    <?php the_excerpt(); ?>             
    </div>
    <?php endwhile; else:?>
    <p>Sorry, no profiles matched your criteria.</p>
   <?php  endif; ?>
</div>
<?php get_sidebar(); ?>
</div>
<?php get_footer(); ?>