很难理解您需要在这里做什么，但您需要了解以下内容

不要将全局变量用作局部变量，这会破坏全局变量并导致循环出现问题。当您遇到问题时，也很难进行调试。唯一应该用作局部变量的全局变量是使用setup_postdata(). setup_postdata() 需要$post 全球的您只需记住重置$post 之后为全球。

使用内部可用的操作和筛选器WP_Query 更改特定查询对象的结果

一般来说$post_count 属性是根据内部的帖子数量计算的$posts. 在统计帖子之前the_posts 滤器这允许我们从$posts 大堆此处帖子数量的任何更改都将导致“$post\\u count”属性被更改

以下是WP_Query 班

if ( ! $q[\'suppress_filters\'] ) {
    /**
     * Filter the array of retrieved posts after they\'ve been fetched and
     * internally processed.
     *
     * @since 1.5.0
     *
     * @param array    $posts The array of retrieved posts.
     * @param WP_Query &$this The WP_Query instance (passed by reference).
     */
    $this->posts = apply_filters_ref_array( \'the_posts\', array( $this->posts, &$this ) );
}
// Ensure that any posts added/modified via one of the filters above are
// of the type WP_Post and are filtered.
if ( $this->posts ) {
    $this->post_count = count( $this->posts );
    $this->posts = array_map( \'get_post\', $this->posts );
    if ( $q[\'cache_results\'] )
        update_post_caches($this->posts, $post_type, $q[\'update_post_term_cache\'], $q[\'update_post_meta_cache\']);
    $this->post = reset( $this->posts );
} else {
    $this->post_count = 0;
    $this->posts = array();
}

如果要将帖子添加到返回的帖子数组中，可以在此处执行此操作

add_filter( \'the_posts\', function ( $posts, \\WP_Query $q )
{
    if ( !$q->is_main_query ) // Only target the main query, return if not. Add any additional conditions
        return $posts;

    $post_to_add = [
        // Valid post properties
    ]; 

    $post_to_add = array_map( \'get_post\', $post_to_add );

    // Add some checks to make sure our $post_to_inject is a valid.

    // Add $post_to_add in front of $posts array
    $posts = array_merge( $post_to_add, $posts );

    // If you need to replace $posts with your object
    //$posts = [$post_to_add];

    return $posts;
}, 10, 2 );

$post 从$posts 数组，所以也没有必要去摆弄它。

至于$found_posts 您可以使用found_posts 筛选以调整找到的帖子数量

add_filter( \'found_posts\', function ( $found_posts, \\WP_Query $q )
{
        if ( !$q->is_main_query ) // Only target the main query, return if not. Add any additional conditions
            return $found_posts;

    $found_posts = 1; // Taken info from your question

    return $found_posts;
}):    

正如我所说，我并不特别确定你需要做什么，但我希望我确实触及了你所追求的要点