如何在PHP中为数组值命名

Question

我有类似的数据：

array:3 [▼
  "jne" => "Jalur Nugraha Ekakurir (JNE)"
  "pos" => "POS Indonesia (POS)"
  "tiki" => "Citra Van Titipan Kilat (TIKI)"
]

我只需要此数组的jne, pos, tiki部分，但我无法获取它们。我试图像这样映射它们：

$couriers = collect($results)->map(function ($item) {
  return ['title' => $item];
})->toArray();

它返回：

array:3 [▼
  "jne" => array:1 [▼
    "title" => "Jalur Nugraha Ekakurir (JNE)"
  ]
  "pos" => array:1 [▼
    "title" => "POS Indonesia (POS)"
  ]
  "tiki" => array:1 [▼
    "title" => "Citra Van Titipan Kilat (TIKI)"
  ]
]

如何在1个数组中获得3个标题的数据，以便可以在视图中循环显示？

代码

$rajaongkir = new Raja\Domestic($key);
$results = $rajaongkir->courier('all');

$couriers = collect($results)->map(function ($item) {
  return ['title' => $item];
})->toArray();

dd($couriers);

Answer 1

您可以使用array_keys()获取数组的所有键。

$arr = [
  'jne'  => 'Jalur Nugraha Ekakurir (JNE)',
  'pos'  => 'POS Indonesia (POS)',
  'tiki' => 'Citra Van Titipan Kilat (TIKI)',
];

$keys = array_keys($arr);
print_r($keys);

Answer 2

您可以使用如下代码段：

$results = [
  "jne" => [
    "title" => "Jalur Nugraha Ekakurir (JNE)"
  ],
  "pos" => [
    "title" => "POS Indonesia (POS)"
  ],
  "tiki" => [
    "title" => "Citra Van Titipan Kilat (TIKI)"
  ],
];

$couriers = array_map(function($title) {
    return ['title' => $title];
}, array_keys($results));