How to leave the date with Brazilian standard in Codeigniter 3?

I'm developing an application that takes the registration date of the registry. But is getting the date with American standard YYYY / mm / dd how do I correct this in codeigniter?

Here is an example of my code.

minha página html

     <div class="row clearfix">
        <div class="col-lg-2 col-md-2 col-sm-4 col-xs-5 form-control-label">
            <label for="cadastro">Cadastro</label>
        </div>
        <div class="col-lg-8 col-md-10 col-sm-8 col-xs-7">
            <div class="form-group">
                <div class="form-line">
                    <input type="text" id="cadastro" name="cadastro" class="form-control" required>
                </div>
            </div>
        </div>
    </div>

My controller is like this

if($this->input->post('submit')){
        $this->form_validation->set_rules('cadastro', 'Cadastro', 'trim|required');

        if ($this->form_validation->run() == FALSE) {
            $dados['view'] = 'admin/properties/properties_add';
            $this->load->view('layout', $dados);
        }
        else{
            $dados = array(
                'cadastro' => date('Y-m-d : h:m:s'),
            );
       }