转换数组以复制关联/顺序json

Question

我试图通过使用json_encode转换php数组来复制这个json：

"sort" : [
    { "age" : "desc" },
    "_score"
]

使用以下PHP数组：

$json_doc['sort'] = array(
    "_score",
    "age"=>"desc"
);

如果我只是在数组中得分，PHP正确地没有为数组分配一个键：

"sort" : [
    "_score"
]

但是当我将"age"=>"desc"混合到混合中时，json_encode无法正确编码_score：

"sort": {
    "0": "_score",
    "age": "desc"
}

Answer 1

$json_doc['sort'] = Array(
      "_score",
      Array('age' => 'desc')
    );