将多维数组中的值放入新数组中

Question

我的任务是按字母顺序排列我在 Drupal 站点上使用 php for 循环输出的一些值 ($highschool)。我的理解是，我需要将这些值放入一个新数组中，以便在这种情况下对它们进行正确排序。

<select id="high_school" name="high_school_name" required="">
    <option value="">High School*</option>

    <?php 
        $highschool_info = field_get_items('node', $node, 'field_high_school_info');
        for ($i = 0; $i < count($highschool_info); $i++) {
        $value = field_view_value('node', $node, 'field_high_school_info', $highschool_info[$i]);
        $field_collection = $value['entity']['field_collection_item'][key($value['entity']['field_collection_item'])];
        $highschool = render($field_collection['field_high_school']['#items'][0]['value']);
    ?>

    <option value="<?php print render ($highschool); ?>"><?php print render ($highschool);?></option>
    <?php } ?>
</select>

我的想法是我能够实现将所有 $highschool 实例放入一个数组 ($highschool_array) 的目标，但我认为会发生的情况是 $highschool 的每个新实例都会覆盖前一个实例，这样数组只包含 $highschool 的最终实例。

        $value = field_view_value('node', $node, 'field_high_school_info', $highschool_info[$i]);
        $field_collection = $value['entity']['field_collection_item'][key($value['entity']['field_collection_item'])];
        $highschool = render($field_collection['field_high_school']['#items'][0]['value']);

        $highschool_array= array();

        $highschool_array[] = $highschool;

完成我所追求的最简单的方法是什么？澄清一下——假设从我上面的循环中输出 $highschool 变量的四个选项值：First Highschool、Second Highschool、Third Highschool 和 Fourth Highschool。如何将所有这些值放入 $highschool_array 中，以便最终对它们进行排序，使它们按以下顺序运行：First Highschool、Fourth Highschool、Second Highschool、Third Highschool。

另外，这就是 $highschool_info 打印时的样子。

Array
(
[0] = Array
    (
        [value] = 2718
        [revision_id] = 189531
    )

[1] = Array
    (
        [value] = 2719
        [revision_id] = 189532
    )

[2] = Array
    (
        [value] = 2720
        [revision_id] = 189821
    )

)

Answer 1

$highschool_array = array_multisort($highschool_info, SORT_ASC, SORT_STRING);

array_multisort() 看起来是您最好的选择。查看 PHP 文档中的示例 2 和 3。