Soal2

Pada Viewnya gini
<?php
$data_soal=array(
    2=>array(
        'judul'=>'Soal 1',
        'ganda'=>array(
            'a'=>'Pilihan 1 A',
            'b'=>'Pilihan 1 B',
            'c'=>'Pilihan 1 C',
            'd'=>'Pilihan 1 D',
        )
    ),
    4=>array(
        'judul'=>'Soal 2',
        'ganda'=>array(
            'a'=>'Pilihan 2 A',
            'b'=>'Pilihan 2 B',
            'c'=>'Pilihan 2 C',
            'd'=>'Pilihan 2 D',
        )
    ),
);
echo form_open($url.'simpan');
?>
    <input type="hidden" name="user" value="1"/> <!-- User ID nya -->
    <?php
    $nomor=0;
    foreach($data_soal as $k=>$v) // $k ID Soal
    {
        $nomor+=1;
        echo $v['judul'];
        echo '<br/>';
        foreach($v['ganda'] as $gk=>$gv)
        {
            //$k index soal, $gk pilihan
            ?>
            <input type="radio" name="jawaban[<?=$k;?>]" value="<?=$gk;?>"/> <?=$gv;?> <br/>
            <?php
        }
        echo '<p>&nbsp;</p>';
    }
    ?>
    <button type="submit">Simpan</button>
<?php
echo form_close();
?>

//Pada Controller
function simpan()
    {
        //Struktur Tablenya gini
        /*
        Table jawaban
        user NOT NULL
        soal NULL
        jawaban NULL
        */
        $user=$this->input->post('user',TRUE);
        $d=array(
            'user_id'=>$user
        );
        $this->db->insert('jawaban',$d);

        $jawaban=$this->input->post('jawaban',TRUE);
        foreach($jawaban as $soalID=>$jawabanID)
        {
            $s=array('user'=>$user);
            $djawaban=array(
                'soal'=>$soalID,
                'jawaban'=>$jawabanID
            );
            $this->db->update('jawaban',$djawaban,$s);
        }
    }