刚刚设置好post_type 到类型数组，以及posts_per_page 到1 您将从这些类型中获得最新的帖子。

$args = array(
    \'post_type\' => array( \'type_1\', \'type_2\' ),
    \'posts_per_page\' => 1
);
$latest = new WP_Query( $args );

这就是我的工作方式谢谢你的帮助

$type_1 = get_posts(array(
   \'post_type\' => \'type_1\',
   \'posts_per_page\' => 1,
   \'orderby\' => \'date\',
   \'order\' => \'DESC\'
));

   $type_1_query_obj = $type_1[0];
   $type_1_date = $type_1_query_obj->post_date;
   $type_1_name = $type_1_query_obj->post_title;



$type_2 = get_posts(array(
   \'post_type\' => \'type_2\',
   \'posts_per_page\' => 1,
   \'orderby\' => \'date\',
   \'order\' => \'DESC\'
));

   $type_2_query_obj = $type_2[0];
   $type_2_date = $type_2_query_obj->post_date;
   $type_2_name = $type_2_query_obj->post_title;


//compare the dates

if( strtotime($type_1_date) > strtotime($type_2_date) ) {
   echo $type_1_name;
}else{
   echo $type_2_name;
}