HH\Vector::toKeysArray

Returns an array whose values are the keys from the current Vector

public function toKeysArray(): varray<int>;

Returns

Examples

$v = Vector {'red', 'green', 'blue', 'yellow'};

$keys_array = $v->toKeysArray();

var_dump(is_array($keys_array));
var_dump($keys_array);
Output
bool(true)
array(4) {
  [0]=>
  int(0)
  [1]=>
  int(1)
  [2]=>
  int(2)
  [3]=>
  int(3)
}