我正在尝试更改页面的查询，其中post meta值为_members_access_role 不符合当前登录用户的要求。以下是我目前掌握的情况：

// Get all posts with the access level of \'Member\'
function members_get_member_posts() {
    $post_ids = array();
    $args=array(
        \'post_type\' => array(\'post\',\'tribe_events\',\'document\'),
        \'meta_key\' => \'_members_access_role\',
        \'meta_value\' => \'member\',
        \'post_status\' => array(\'publish\',\'private\')
    );
    $protected_posts = get_posts($args);
    if($protected_posts) {
        foreach($protected_posts as $p) {
            $post_ids[] = $p->ID;
        }
    }
    // return an array of paid post IDs
    return $post_ids;
}

// Hide all posts from users who are not logged-in or are not administrators or members
function members_hide_member_posts($query) {
    $current_user = wp_get_current_user();
    if(empty($current_user) || ($current_user->roles[0] != \'member\' && $current_user->roles[0] != \'administrator\') && (false == $query->query_vars[\'suppress_filters\'])) {
        $protected_posts = members_get_member_posts();
        if($protected_posts)
            $query->set(\'post__not_in\', $protected_posts);
    }
    return $query;
}
add_filter(\'pre_get_posts\', \'members_hide_member_posts\');

如果我快点print_r(members_get_member_posts()) 我正确地看到了post id的数组，但在前端，post仍然显示在不应该显示的位置（因为我正在将返回的函数值输入到posts__not_in).

例如，如果公共用户访问该站点，他们仍然可以看到成员（角色）帖子。也有点麻烦global $current_user 对象--因为它不会检查$current_user->ID 是否为空，页面是否会产生关于内存限制的致命错误（即使在我将php.ini文件设置为256M之后），那么可能是内存泄漏？谢谢

更新虽然没有文档记录，但我仔细检查了您是否可以使用array() 的值post_type 在截至3.3的get\\U帖子中（我相信）。也尝试不使用它，只返回应该返回的帖子-因此数据正在返回，而不是“过滤”该数据。

// Get all posts with the access level of \'Member\'
function members_get_member_posts() {

    $post_ids = wp_cache_get( \'wpse61487_members_posts\' );
    if ( false === $post_ids ) {

        $post_ids = array();
        $args=array(
            \'post_type\' => \'any\',
            \'meta_key\' => \'_members_access_role\',
            \'meta_value\' => \'member\',
            \'post_status\' => array(\'publish\',\'private\')
        );

        $protected_posts = get_posts($args);
        if($protected_posts) {
            $post_ids = wp_list_pluck( $protected_posts, \'ID\' );
        }

        wp_cache_set( \'wpse61487_members_posts\', $post_ids );
     }

     // return an array of paid post IDs
     return $post_ids;
}

// Hide all posts from users who are not logged-in or are not administrators or members
function members_hide_member_posts($query) {

    if( !$query->is_main_query() )
        return;

    $current_user = wp_get_current_user();
    if(empty($current_user) || ($current_user->roles[0] != \'member\' && $current_user->roles[0] != \'administrator\') && (false === $query->query_vars[\'suppress_filters\'])) {
        $protected_posts = members_get_member_posts();
        if( !empty( $protected_posts ) )
            $query->set(\'post__not_in\', $protected_posts);
    }
}
add_action(\'pre_get_posts\', \'members_hide_member_posts\');