Convert array values from string to int?

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The following code:

$string = "1,2,3"
$ids = explode(',', $string);
var_dump($ids);

Returns the array:

array(3) {
  [0]=>
  string(1) "1"
  [1]=>
  string(1) "2"
  [2]=>
  string(1) "3"
}

I need for the values to be of type int instead of type string. Is there a better way of doing this than looping through the array with foreach and converting each string to int?

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