可以编写SQL查询来实现这一点：

<?php

$sql = <<<SQL
SELECT
    p.ID,
    p.post_title,
    p.post_author
FROM {$GLOBALS[\'wpdb\']->posts} p INNER JOIN (
    SELECT ID, post_title
        FROM {$GLOBALS[\'wpdb\']->posts} ORDER BY post_date DESC
    ) s ON p.ID=s.ID
WHERE
    p.post_type = \'post\'
AND
    p.post_status = \'publish\'
GROUP BY
  p.post_author
SQL;

$rows = $GLOBALS[\'wpdb\']->get_results( $sql );

您可以首先获取用户，然后对每个用户运行WP\\u查询：。（这是一种快速、简单但未经优化的方法）

$users = get_users( );
foreach ( $users as $user ) {

    $args = array(
        \'post_type\'              => array( \'post\' ),
        \'author\'                 => $user->ID
        \'posts_per_page\'         => \'1\',
        \'order\'                  => \'DESC\',
        \'orderby\'                => \'date\',
    );
    $query = new WP_Query( $args );
    if ( $query->have_posts() ) {
        while ( $query->have_posts() ) {
            $query->the_post();
            // do something
        }
    }
    wp_reset_postdata();

}