我正在使用laravel,我有一个收藏夹,里面有一些收藏夹,所以我想获取每个收藏夹的索引
我的收藏就是这样
Collection {#4415 ▼
#items: array:14 [▼
"01" => Collection {#4311 ▶}
"02" => Collection {#4318 ▶}
"07" => Collection {#4325 ▶}
10 => Collection {#4338 ▶}
12 => Collection {#4345 ▶}
13 => Collection {#4352 ▶}
14 => Collection {#4359 ▶}
18 => Collection {#4366 ▶}
20 => Collection {#4373 ▶}
21 => Collection {#4380 ▶}
25 => Collection {#4387 ▶}
26 => Collection {#4400 ▶}
27 => Collection {#4407 ▶}
31 => Collection {#4414 ▶}
]
}
例如,我想获取01 02 03 04 05,它们是一个月中的几天,我想将它们用于图表js
答案 0 :(得分:3)
您可以使用过滤器收集帮助器。
$result = $yourCollection->filter(function ($value, $key) {
return in_array($key, ['01', '02', '03', '04', '05']);
});
或者在外部,如果您想传递该数组,
$monthArr = ['01', '02', '03', '04', '05'];
$result = $yourCollection->filter(function ($value, $key) use($monthArr)
{
return in_array($key, $monthArr);
});
编辑
如果您只想获取集合键,
$keys = $yourCollection->keys();
dd($keys);
这里是official documentation的链接。
答案 1 :(得分:1)
如果您只想获取集合的键,则可以使用https://github.com/flutter/flutter/issues/31818