HH\Pair::toKeysArray

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

public function toKeysArray(): varray<int>;

Returns

Examples

$p = Pair {'foo', -1.5};

var_dump($p->toKeysArray());
Output
array(2) {
  [0]=>
  int(0)
  [1]=>
  int(1)
}