Question

我有一个foreach循环，可以找到评论回复并将其存储在$child_comments

中

之后

<?php  echo '<pre>';
print_r($child_comments);
echo '</pre>'; ?>

我为每个父评论获得了一个单独的数组：

Array
(
    [0] => stdClass Object
        (
            [comment_ID] => 603
            [comment_parent] => 600
            [user_id] => 2
        )

    [1] => stdClass Object
        (
            [comment_ID] => 601
            [comment_parent] => 600
            [user_id] => 2
        )

)

Array
(
     [0] => stdClass Object
        (
            [comment_ID] => 584
            [comment_parent] => 580
            [user_id] => 1
        )
)

Array
(
    [0] => stdClass Object
        (
            [comment_ID] => 608
            [comment_parent] => 520
            [user_id] => 2
        )

    [1] => stdClass Object
        (
            [comment_ID] => 598
            [comment_parent] => 520
            [user_id] => 2
        )

    [2] => stdClass Object
        (
            [comment_ID] => 521
            [comment_parent] => 520
            [user_id] => 2
        )

)

但我需要按照评论ID排序并输出评论，从最高ID到最低ID。

我可以通过

获得我喜欢的评论

foreach ($child_comments as $objects) {
  echo $objects->comment_ID;
}

但他们仍将根据其父评论进行排序。有任何想法吗？理想的结构是这样的：

Array
(
    [0] => stdClass Object
        (
            [comment_ID] => 608
            [comment_parent] => 520
            [user_id] => 2
        )
    [1] => stdClass Object
        (
            [comment_ID] => 603
            [comment_parent] => 600
            [user_id] => 2
        )

    [2] => stdClass Object
        (
            [comment_ID] => 601
            [comment_parent] => 600
            [user_id] => 2
        )

    [3] => stdClass Object
        (
            [comment_ID] => 598
            [comment_parent] => 520
            [user_id] => 2
        )

    [4] => stdClass Object
        (
            [comment_ID] => 584
            [comment_parent] => 580
            [user_id] => 1
        )

    [5] => stdClass Object
        (
            [comment_ID] => 521
            [comment_parent] => 520
            [user_id] => 2
        )
)

Answer 1

如果您获得不同comments中的每个arrays，那么首先您可以使用array_merge()创建单个数组，然后使用usort()来sort您的最终版本数组，

<?php
    $comments=array_merge($child_comments);
    function cmp($a, $b) {
        return $b['comment_ID'] - $a['comment_ID'];//use $b->comment_ID if Object
    }
    usort($comments, "cmp");
    print_r($comments);
?>

Answer 2

如果您有复杂的排序标准，最好的方法是使用usort进行回调。

例如：

usort($arrayOfObjects, function($a, $b){
    if($a->comment_parent > $b->comment_parent) return 1;
    elseif($a->comment_parent < $b->comment_parent) return -1;
    else{
        // Do child compare here...
    }
});

按最高值对数组中的对象进行排序

2 个答案: