使用WP\u查询呈现分页时出现的问题

<!-- post loop -->
<div class="auto cell">
<?php 
// the query
$wpb_all_query = new WP_Query(array('post_type'=>'review', 'posts_per_page' => 3, 'orderby'=>'name', 'order'=>'ASC')); ?>
 
<?php if ( $wpb_all_query->have_posts() ) : ?>
    <!-- start of main news loop -->
    <?php while ( $wpb_all_query->have_posts() ) : $wpb_all_query->the_post(); ?>
      <div class="grid-x grid-margin-x">
		<div class="cell large-2 small-2">
			<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>" class="thumbnail">
			<?php if ( has_post_thumbnail() ) {
				the_post_thumbnail();
			} else { ?>
			<img src="<?php bloginfo('template_directory'); ?>/img/default_thumb.png" alt="<?php the_title(); ?>" />
			<?php } ?></a>
		</div>
		
		<div class="cell large-10 small-10">
				<h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
				<span class="post-meta"> By <?php the_author_posts_link(); ?> &middot; <?php the_time('F jS, Y, g:i A'); ?> <?php edit_post_link(__('Edit This'), ''); ?></span>
				<ul class="list-meta">
				<li>Developer: <?php echo(types_render_field( 'game-developer' )); ?></li>
				<li>Genre: <?php echo(types_render_field( 'game-genre' )); ?></li>
				</ul>
		</div>
		<div class="post-categories cell"><?php the_category(', '); ?></div>  
	</div>
    <?php endwhile; ?>
    <!-- start of pagination -->
  <div class="row">
 <?php if (function_exists("pagination")) {
          pagination($custom_query->max_num_pages);
      } ?>
  </div>
    <!-- end of pagination -->
    <!-- end of main news loop -->