提取特定的键值以在PHP中分离数组

The array structure is like this

数组结构是这样的

    $array1 = [
   "101" => [
        "name" => "Robin",
        "age" => "25"
    ],
    "102" => [
        "name" => "asRobin",
        "age" => "25"
    ],
    "103" => [
        "name" => "Roasbin",
        "age" => "25"
    ],
    "104" => [
        "name" => "Robiasn",
        "age" => "25"
    ]
  ]