如何在日期列之前显示自定义post类型列

function create_custom_post_type() {
    register_post_type('custom_post',
        array(
            'labels' => array(
                'name' => 'Custom Posts',
                'singular_name' => 'Custom Post'
            ),
            'public' => true,
            'has_archive' => true,
            'supports' => array('title', 'editor', 'thumbnail'),
        )
    );
}
add_action('init', 'create_custom_post_type');

function add_custom_column($columns) {
    $columns['custom_column'] = 'Custom Column';
    return $columns;
}
add_filter('manage_custom_post_posts_columns', 'add_custom_column');

function display_custom_column($column, $post_id) {
    if ($column == 'custom_column') {
        echo 'Custom Column Content';
    }
}
add_action('manage_custom_post_posts_custom_column', 'display_custom_column', 10, 2);