按内部值排序PHP数组 - Sort PHP array by inner value

Sort PHP array by inner value

本文关键字：PHP 数组排序内部 | 更新日期: 2023-09-27

我有下面的数组，已经从wordpress使用get_children()生成。问题是，它似乎不能按照wordpress中使用的菜单顺序来排序输出。

所以下面的数组需要按键[menu_order]的内部值排序。我已经尝试了很多不同的方法使用ussort等，但似乎不能让它工作。

Array
(
[40] => WP_Post Object
    (
        [ID] => 40
        [post_author] => 1
        [post_date] => 2016-09-03 19:31:25
        [post_date_gmt] => 2016-09-03 19:31:25
        [post_content] => test 2
        [post_title] => Test 2
        [post_excerpt] => 
        [post_status] => publish
        [comment_status] => closed
        [ping_status] => closed
        [post_password] => 
        [post_name] => test-2
        [to_ping] => 
        [pinged] => 
        [post_modified] => 2016-09-03 19:56:04
        [post_modified_gmt] => 2016-09-03 19:56:04
        [post_content_filtered] => 
        [post_parent] => 2
        [guid] => http://example.com/2
        [menu_order] => 2
        [post_type] => page
        [post_mime_type] => 
        [comment_count] => 0
        [filter] => raw
    )
[38] => WP_Post Object
    (
        [ID] => 38
        [post_author] => 1
        [post_date] => 2016-09-03 19:23:18
        [post_date_gmt] => 2016-09-03 19:23:18
        [post_content] => test 1
        [post_title] => Test 1
        [post_excerpt] => 
        [post_status] => publish
        [comment_status] => closed
        [ping_status] => closed
        [post_password] => 
        [post_name] => test-1
        [to_ping] => 
        [pinged] => 
        [post_modified] => 2016-09-03 19:51:17
        [post_modified_gmt] => 2016-09-03 19:51:17
        [post_content_filtered] => 
        [post_parent] => 2
        [guid] => http://example.com/1
        [menu_order] => 1
        [post_type] => page
        [post_mime_type] => 
        [comment_count] => 0
        [filter] => raw
    )
)

虽然您可以将usort与回调一起使用，但正确的解决方案是请求通过get_children()直接订购的商品。您可以通过使用orderby参数来实现这一点。这样的:

$children = get_children(array(
  // other args here
  'orderby' => 'menu_order'
));

详细信息请参见WordPress的get_children()和get_posts()

这是usort的典型用例

usort($array, function($a, $b){
    return $a['menu_order'] > $b['menu_order'];
});

您可以使用ussort: http://php.net/usort。我试着使它更详细如下。

function menu_order($a, $b)
 {
    return strcmp($a->menu_order, $b->menu_order);
 }
usort($newsortedarray, "menu_order");
foreach ($newsortedarray as $array){
  // continue....
 }