如何将数组键转换为int

array = {"1": "value1", "2": "value2", "3": "value3"}
int_array = {int(key): value for key, value in array.items()}

var array = {"1": "value1", "2": "value2", "3": "value3"};
var intArray = {};
for (var key in array) {
  if (array.hasOwnProperty(key)) {
    intArray[parseInt(key)] = array[key];
  }
}

$array = array("1" => "value1", "2" => "value2", "3" => "value3");
$intArray = array_map('intval', array_keys($array));