有几种方法可以做到这一点。

最简单的方法就是获取所有内容：帖子和术语，然后使用一些array_filter 将事物分组的魔法。简单示例（仅适用于PHP 5.3以上版本）：

<?php
$terms = get_terms(\'your_taxonomy\');

$term_ids = array_map(function($t) {
    return $t->term_id,
}, $terms);

$posts = get_posts(array(
    \'nopaging\'      => true,
    \'tax_query\'     => array(
        array(
            \'taxonomy\'  => \'category\',
            \'field\'     => \'id\',
            \'terms\'     => $term_ids,
        ),
    ),
    \'meta_query\'    => array(
        array(
            \'key\'       => \'TEST1\',
            \'compare\'   => \'EXISTS\', // wp 3.5+ only
        )
    ),
));

foreach ($terms as $t) {
    $posts_in_term = array_filter($posts, function($p) use ($t) {
        // has_term likely triggers a DB hit...
        return has_term($t->term_id, \'your_taxonomy\', $p);
    });

    // do stuff with $posts_in_term 
}

这很容易理解。您将大量的订购工作发送到DB，并在PHP应用程序中完成。不错，DB点击率肯定比以前少了。如果你需要在每个类别名称上加一个标题，这可能是一条可行之路，因为使用下一种方法将非常困难。

选项2：执行get_posts 正常查询，但挂接到posts_groupby 和order by term ID。您需要进行一些挖掘，以找出要在中排序的表别名/名称WP_Tax_Query 类，该类根据给定集中的分类查询数创建表别名。因为我们只有一个，所以没有allias，您只需要添加$wpdb->term_relationships.object_id 发送给组。最终的结果是GROUP BY $wpdb->posts.ID, $wpdb->term_relationships.object_id.

示例：

<?php
// our group by callback
function wpse84243_groupby($groupby, $query) {
    global $wpdb;

    return $groupby . \' \' . $wpdb->term_relationships . \'.object_id\';
}

add_filter(\'posts_groupby\', \'wpse84243_groupby\', 10, 2);
$posts = get_posts(array(
    \'nopaging\'      => true,
    \'tax_query\'     => array(
        array(
            \'taxonomy\'  => \'category\',
            \'field\'     => \'id\',
            \'terms\'     => get_terms(\'category\', array(\'fields\' => \'ids\')),
        ),
    ),
    \'meta_query\'    => array(
        array(
            \'key\'       => \'TEST1\',
            \'compare\'   => \'EXISTS\', // wp 3.5+ only
        )
    ),
));

// remove the filter, put things back to normal
remove_filter(\'posts_groupby\', \'wpse84243_groupby\', 10, 2);

// do stuff with $posts, they\'ll be grouped by your taxonomy ID.