I already found out how to get the amount of networkwide posts 在WPMS中。到目前为止，该函数是由打开网站的用户调用的。所以每24小时重建一次。我不想让一个用户等待半分钟，直到过程完成，所以我开始使用wp\\u cron。但似乎有一个问题，因为我无法在短代码中看到结果。如果有人能看看以下几行，那就太好了：

register_activation_hook(__FILE__, \'wpms_stats_activation\');
add_action(\'wpms_stats_daily_event\', \'posts_count_func\');
register_deactivation_hook(__FILE__, \'wpms_stats_deactivation\'); 

// Start the cron on activation
function wpms_stats_activation() {
wp_schedule_event(time(), \'daily\', \'wpms_stats_daily_event\');
}

// Delete the cache and deactivate the cron
function my_deactivation() {
    wp_clear_scheduled_hook(\'wpms_stats_daily_event\');
    delete_site_transient( \'total_posts_cache\' );
}

// Count the posts of the whole network
function posts_count_func( $args ){

    global $wpdb;
    $blogs = $wpdb->get_results( $wpdb->prepare(
            "SELECT * FROM {$wpdb->blogs} WHERE  spam = \'0\' 
            AND deleted = \'0\' AND archived = \'0\' 
            ORDER BY registered DESC, 2", ARRAY_A ) );

    $original_blog_id = get_current_blog_id();

     $args = array(
        \'numberposts\'     => -1,
        \'post_type\'       => \'post\',
        \'post_status\'     => \'publish\' );
    $total_network = $draft_network = 0;
    $total_sites = 0;

    foreach ($blogs as $blog)
    {
        wp_cache_flush();
        switch_to_blog( $blog->blog_id );
        $args[\'post_status\'] = \'publish\';
        if (count(get_posts($args))<2) { continue; }
        $total_posts = count( get_posts( $args ) );
        $total_network += $total_posts;
        $total_sites += 1;

        $args[\'post_status\'] = \'draft\';

        }

        set_site_site_transient ( \'total_posts_cache\', $total_network );


 switch_to_blog( $original_blog_id );
}

//Make a shortcode which shows the amount of posts
function posts_shortcode_count_func( $atts ){
    $post_count = get_site_transient( \'total_posts_cache\' );
    return $post_count;
}
add_shortcode( \'posts\', \'posts_shortcode_count_func\' );