过滤、展平和重命名多维数组中的键 (Mayflower/Holidays)

Question

我在 Laravel 7 中使用 Mayflower/Holidays 来获取我所在地区的假期列表。我得到的 Json 是：

{"2":{"type":"holiday","name":"My Holiday 1","weight":1,"date":"2020-05-01 00:00:00.000000","timezone_type":3,"timezone":"Europe\/Berlin"},"5":{"type":"holiday","name":"My Holiday 2","weight":1,"date":"2020-05-20 00:00:00.000000","timezone_type":3,"timezone":"Europe\/Berlin"}}

没错，但我需要不同的表示法。

[{"title":"My Holiday 1","start":"01.05.2020"},{"title":"My Holiday 2","start":"20.05.2020"}]

轻得多，一维，键 name 和 date 应该重命名为 title 和 start。我试过使用 foreach 和 array_map 的各种方法，但不断出错。使用 PHP 7 执行此操作的最佳方法是什么？

Answer 1

只需decode json string关联数组：

$array = json_decode($jsonString, true);

然后您可以使用 array_map 或 foreach 并根据您的表示格式化数据。

最后一步将是 converting back array to json string:

json_encode($jsonString);

Answer 2

既然你也标记了Laravel，我可以告诉你Laravel集合each()方法。

// your input
$jsonHolidays = '{"2":{"type":"holiday","name":"My Holiday 1","weight":1,"date":"2020-05-01 00:00:00.000000","timezone_type":3,"timezone":"Europe\/Berlin"},"5":{"type":"holiday","name":"My Holiday 2","weight":1,"date":"2020-05-20 00:00:00.000000","timezone_type":3,"timezone":"Europe\/Berlin"}}';

// convert json into array
$arrayHolidays = json_decode($jsonHolidays, true);

// Using laravel collection
$holidays = [];
collect($arrayHolidays)->each(function ($holiday) use (&$holidays) {
    $holidays[] = [
        'title' => $holiday['name'],
        'start' => \Carbon\Carbon::parse($holiday['date'])->format('d.m.Y')
    ];
});

// converting back to json
return json_encode($holidays, true);

过滤、展平和重命名多维数组中的键 (Mayflower/Holidays)

Filtering, flattening and renaming keys in multidimensional array (Mayflower/Holidays)

arrays

laravel

php-7