function($id = '')
{
if ($id === '') {
if ($this->id_just_inserted) {
$id = $this->id_just_inserted;
$this->id_just_inserted = null;
}
else{
$id = $this->pdo->lastInsertId();
if (\is_string($id) && Str::isInteger($id) && ((int)$id != PHP_INT_MAX)) {
$id = (int)$id;
}
}
}
else{
$this->id_just_inserted = $id;
}
$this->last_insert_id = $id;
return $this;
}
