php - 多维数组按值排序，同时将其转换为整数

Question

我有一个像这样的数组，它来自ElasticSearch。由于我无法从Elasticsearch订购此汇总。 Elasticsearch仅支持按计数顺序或按字母顺序排序。我决定在PHP方面进行此操作。

"buckets" => array:8 [
  0 => array:2 [
    "key" => "1 Ft."
    "doc_count" => 6
  ]
  1 => array:2 [
    "key" => "10 Ft."
    "doc_count" => 10
  ]
  2 => array:2 [
    "key" => "15 Ft."
    "doc_count" => 10
  ]
  3 => array:2 [
    "key" => "20 Ft."
    "doc_count" => 10
  ]
  4 => array:2 [
    "key" => "25 Ft."
    "doc_count" => 10
  ]
  5 => array:2 [
    "key" => "3 Ft."
    "doc_count" => 10
  ]
  6 => array:2 [
    "key" => "5 Ft."
    "doc_count" => 10
  ]
  7 => array:2 [
    "key" => "7 Ft."
    "doc_count" => 10
  ]
]

如您所见，该数组是按字母顺序排列的。我想做的是通过“键”字段对该数组进行排序，但是通过认为它是整数值来对其进行排序。预期结果是:

"buckets" => array:8 [
  0 => array:2 [
    "key" => "1 Ft."
    "doc_count" => 6
  ]
  1 => array:2 [
    "key" => "3 Ft."
    "doc_count" => 10
  ]
  2 => array:2 [
    "key" => "5 Ft."
    "doc_count" => 10
  ]
  3 => array:2 [
    "key" => "7 Ft."
    "doc_count" => 10
  ]
  4 => array:2 [
    "key" => "10 Ft."
    "doc_count" => 10
  ]
  5 => array:2 [
    "key" => "15 Ft."
    "doc_count" => 10
  ]
  6 => array:2 [
    "key" => "20 Ft."
    "doc_count" => 10
  ]
  7 => array:2 [
    "key" => "25 Ft."
    "doc_count" => 10
  ]

]

Answer 1

您可以将自然比较与usort函数一起使用:

usort($buckets, function($a, $b) {
    return strnatcmp($a->key, $b->key);
});