salah logic

<?php
public function insert() {
    $res = $this->modelweb->InsertData('siswa', array(
        "nama"      => $this->input->post('nama'),
        "alamat"    => $this->input->post('alamat'),
        "kelas"     => $this->input->post('kelas'),
                "no_hp"     => $this->input->post('no_hp'),
                "jk"            => $this->input->post('jk'),
    ));
//------------- harusnya return TRUE or FALSE bukan 1,2,3,4,5 !!!
    */ supaya kondisi ini di kirim ke view bagaimana?
    if($res){  // >= 1) {
        //redirect('web');
    $result=$this->load->view('web',$param,true);
    $result=json_decode($result);
    }
    else {
    redirect('web','reload');
    }
}

//=====================web========
//----------kirim semua variabel ke array
$ar=array('data'=>'bla bla');
echo json_encode($ar);