public function insert($value, $key)
{
if ($value instanceof HArray) {
$value = $value->toArray();
}
if ($value instanceof HString) {
$value = $value->toString();
}
if (Helper::canBeInArray($value)) {
$valueArray = $value;
} else {
$valueArray = [$value];
}
if (isset($key)) {
if (is_numeric($key)) {
list($array, $length) = $this->setSubarrayAndLengthForSequentialArray($key, $valueArray);
} elseif (is_string($key)) {
list($array, $length) = $this->setSubarrayAndLengthForAssociativeArray($key, $valueArray);
} else {
throw new \InvalidArgumentException("Invalid array key");
}
} else {
list($array, $length) = $this->setSubarrayAndLengthWhenNoKeyProvided($valueArray);
}
$first = $this->arr->slice(0, $length)->toArray();
$lastStartingPoint = sizeof($this->arr) - sizeof($first);
$last = $this->arr->slice($length, $lastStartingPoint)->toArray();
return new HArray(array_merge_recursive($first, (array) $array, $last));
}
