我正在我的首页上建立一个帖子网格，我想每个CPT显示一个随机帖子。目前，CPT是在查询数组中查询出来的：

<?php
$c = 1; //init counter
$bpr = 3; //boxes per row   
$wp_query = new WP_Query(array(\'showposts\' => 9, \'orderby\'=> \'rand\', \'post_type\' => array(\'productions\',  \'plays\', \'movies\', \'theatres\', \'directors\', \'artists\', \'countries\', \'events\', \'grades\')));
while( have_posts() ) : the_post(); ?>


<div class="post" id="post-<?php the_ID(); ?>">
   <p><?php $post_type = get_post_type_object( get_post_type($post) ); echo $post_type->label ; ?></p>
   <a href="<?php the_permalink() ?>" rel="bookmark">
      <?php if ( has_post_thumbnail() ) {
         the_post_thumbnail(\'thumbnail\');
        } else { ?>
        <img src="<?php bloginfo(\'template_directory\'); ?>/img/fallback_image.jpg" alt="<?php the_title(); ?>" />
      <?php } ?>
   </a>
</div>
<?php
if($c == $bpr) :
?>
<div class="clr"></div>
<?php
$c = 0;
endif;
?>
<?php
        $c++;
        endwhile;

?>

所以这个数组的问题是，当我查询CPT时，它开始重复CPT，有时甚至它会查询CPT中的4篇随机帖子。

一种解决方案是创建9个不同的查询—每个CPT一个查询，但这对于首页来说似乎有点过头了。

有没有一种方法可以在不影响页面加载时间的情况下，在每个CPT中只查询1篇随机帖子？

$args = array(
    \'post_type\' => array( \'type1\', \'type2\', \'type3\', \'etc...\' ),
    \'posts_per_page\' => -1
    );

$myquery = new WP_Query( $args );
    $type1 = 0; $type2 = 0; $type3 = 0;  $count = 0;
    while ( $myquery->have_posts() ) : $myquery->the_post();

    if ( $post->post_type == \'type1\' ) $type1++; 
    if ( $post->post_type == \'type1\' && $type1 > 1 ) continue;

    if ( $post->post_type == \'type2\' ) $type2++; 
    if ( $post->post_type == \'type2\' && $type2 > 1 ) continue;

    if ( $post->post_type == \'type3\' ) $type3++; 
    if ( $post->post_type == \'type3\' && $type3 > 1 ) continue;

    // I stopped at 3 but keep going as far as you need.

    $count++; if ( $count > 9 ) continue;

    // Do Stuff

    endwhile;