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php - 在多个数组中按键排序

问题描述

我正在尝试创建一个日历（使用 WordPress）。一切正常。但我似乎无法按小时对事件进行排序。

实际上输出是：

Array (
    [2020] => Array (
        [October] => Array (
            [21] => Array (
                [18] => Array (
    
                )
                [14] => Array (
    
                )
                [12] => Array (
    
                )
            )
        )
    [2021] => Array (
        [January] => Array (
            [12] => Array (
                [14] => Array (
    
                )
                [13] => Array (
    
                )
                [11] => Array (
    
                )
            )
        )
    )
)

我试图得到：

Array (
    [2020] => Array (
        [October] => Array (
            [21] => Array (
                [12] => Array (
    
                )
                [14] => Array (
    
                )
                [18] => Array (
    
                )
            )
        )
    [2021] => Array (
        [January] => Array (
            [12] => Array (
                [11] => Array (
    
                )
                [13] => Array (
    
                )
                [14] => Array (
    
                )
            )
        )
    )
)

我的数组的结构是这样的：

[$year]
    [$month]
        [$day]
            [$hour]

请问如何[$hour]在里面点[$day]餐？

    $events_list = array();
    
    if($events) {
        foreach($events as $event) {
            $date = $date_event = get_field('event_date', $event->ID, false);
            $hour = $hour_start = get_field('event_hour_start', $event->ID, false);
            $hour_end = get_field('event_hour_end', $event->ID, false);
    
            $date = new DateTime($date);
            $hour = new DateTime($hour);
    
            $date_event = $date->format('l j F');
    
            $year = $date->format('Y');
            $month = $date->format('F');
            $day = $date->format('d');
            $hour = $hour->format('G');
    
            $events_list[$year][$month][$day][$hour] = array('datas'=>$event, 'date'=>$date_event, 'hour_start'=>$hour_start, 'hour_end'=>$hour_end);
        }
    }

ksort($events_list);

标签： php

解决方案

使用ksort()，阅读更多关于它的信息。 您的用例的MWE（最小工作示例）将是：

$arr = array(
    2021 => array(
        "October" => array(
            21 => array(
                18 => array(),
                14 => array(),
                12 => array()
            )
        )
   )
);

ksort($arr[2021]["October"][21]);
print_r($arr);

// $arr = array(
//    2021 => array(
//        "October" => array(
//            21 => array(
//                12 => array(),
//                14 => array(),
//                18 => array()
//            )
//        )
//    )
// );

此函数还有第二个可选参数名为sort_flags，它可以占用以下选项之一：

SORT_REGULAR       - compare items normally; the details are described in the comparison operators section. This is DEFAULT value
SORT_NUMERIC       - compare items numerically
SORT_STRING        - compare items as strings
SORT_LOCALE_STRING - compare items as strings, based on the current locale. It uses the locale, which can be changed using setlocale()
SORT_NATURAL       - compare items as strings using "natural ordering" like natsort()
SORT_FLAG_CASE     - can be combined (bitwise OR) with SORT_STRING or SORT_NATURAL to sort strings case-insensitively

编辑：也适用于表示整数值的字符串键。

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