使用未知键访问嵌套的关联数组

Question

I am trying to access elements from a multidimensional array in an object. For example, let's assume there is some class Foo that has a variable called $phone that represents the multidimensional array.

$phone -> structure will look like
Array {
  "home" Array(1) {[0] = "555-1212"},
  "work" Array(2) {[0] = "555-1234", [1] = "555=5434"},
  "other" Array(1) {[0] = "555=9090"}
}

Note: We can't assume we know the keys.

I can access a value by giving explicit keys, ie,

$foo->phone["home"][0]

The problem comes to when I don't explicitly know the keys and pull them from elsewhere. For example if $type="phone", $subtype = "home", and I want the first entry I would expect to use:

$object->$type[$subtype][0]

to get the value, but I get an error and it doesn't think it is an array. I am not sure where the error is.

The next thing would be to add elements to the lowest level array. I assume the following would work, but doesn't:

array_push($object->$type[$subtype], $value)

This mutidimensional array would allow me to store phone numbers labelled by keys in a single nested structure. If this is overcomplicating the issue please let me know. The reason I chose this structure is because the keys can be anything the user customizes.

Thanks.

Answer 1

我相信如果将$ object-> $ type保存为自己的变量，然后访问该变量以更深入数组，这将起作用。