Get INT as INT and not as string - Codeigniter - Ajax

Question

I have the following tabela, controller and model, I want to get what it is int as int, and not string.

Note that when the item is recovered, the field int is in quotes. How do I recover the data correctly ?

Table

DROP TABLE IF EXISTS `tbl_banco`;
CREATE TABLE IF NOT EXISTS `tbl_banco` (
  `id` INT(11) NOT NULL AUTO_INCREMENT,
  `codigo` VARCHAR(5) NOT NULL,
  `nome` VARCHAR(255) NOT NULL,
  `assessoria_id` INT(11) NOT NULL,
  `dt_cadastro` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  `dt_atualizacao` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `situacao` TINYINT(1) NULL DEFAULT NULL,
   PRIMARY KEY (`id`))
ENGINE = InnoDB
DEFAULT CHARSET = utf8;

Controller

//Função Obter Banco por ID
public function obter($id)
{
    if ($id == 0)
    {
        $id = $id;
        $dados = $this->banco->json_array($id);
        echo json_encode($dados);
    }
    else
    {
        $dados = $this->banco->obter($id);
        echo json_encode($dados);
    }
}

Model

/*** Obter por ID ***/
public function obter($id)
{
    $this->db->from($this->tbl_banco);
    $this->db->where('id',$id);
    $query = $this->db->get();
    return $query->row_array();
}

Ajax

function obter(id, acao) {
var ret;
$.ajax({
    type: 'GET',
    async: false,
    contentType: 'application/json',
    url : "banco/obter/" + id + "/" + acao,
    success: (function (obj) {          
        _obj = JSON.parse(obj);
        _obj_banco = _obj;
        objeto_form();
        ret = true;
    }),
    error: (function (erro) {
        trata_erro_ajax(erro);
        ret = false;
    })
});
return ret;
}

Answer 1

Can you solve with JSON_NUMERIC_CHECK, an option of json_encode which was added in PHP 5.3.3

Problem and that this will transform into int all the numbers that it achieves, for example your codigo will return as 1 instead of 001

Just add the option at Encode time echo json_encode($dados, JSON_NUMERIC_CHECK);

More Infos Voce can be found in json_encode Docs()