改变数组的结构（使数组中的嵌套数组）

Question

我有一个数组，但我不知道如何将其更改为我需要的结构：我的数组：

array (

  "1536" => "12",

  "1695" => "Korea",

  "1904" => "10/7",

  "1905" => "",

  "1906" => null,

  "1907" => "1.1",

  "1906.1" => "H1",

  "1906.2" => "H35",

  "1905.1" => "15"

)

我需要将此数组转换为这种形式（删除十分之一的数字，并将相同数字的值粘贴到数组中）：

array (

  "1536" => "12",

  "1695" => "Korea",

  "1904" => "10/7",

  "1905" => array("", "15"),

  "1906" => array(null, "H1", "H35"),

  "1907" => "1.1"

)

Answer 1

使用array_walk()对数组进行迭代。在迭代检查天气的每个循环中，键已经存在于$res数组中。如果存在，则创建与旧值合并的数组并分配给相同的键。如果不存在键，则将 分配$val给$res数组。$data = array("1536" => "12","1695" => "Korea","1904" => "10/7","1905" => "", "1906" => null,"1907" => "1.1","1906.1" => "H1","1906.2" => "H35","1905.1" => "15");$res = array();array_walk($data, function($val, $key) use(&$res) {    $key = intval($key);    if (array_key_exists($key, $res)) {        $res[$key] = is_array($res[$key]) ? array_merge($res[$key], [$val]) : array_merge([$res[$key]], [$val]);    } else {        $res[$key] = $val;    }});print_r($res);