这个comments_open() 布尔函数返回按“comments\\u open”过滤。未经测试的伪代码作为指南：

add_filter( \'comments_open\', function( $open ) {
    $user = wp_get_current_user();
    $open = $open && $user && time() - mysql2date( \'U\', $user->user_registered ) > 3 * DAY_IN_SECONDS;
    return $open;
} );