Hello I'm looking to get the record and save it to my data base but all the time I'm getting the same sql statement for all the select options

```
Course ID INSERT INTO `tbl_assign_course` (`course_id_1`, course_id_2`, `course_id_3`) VALUES ('7', '7', '7') 

```

[Here is the Options list to choose:](https://i.stack.imgur.com/LfmuO.png) 

How I can fix this logical error I will appreciate any kind of help 

```
<!DOCTYPE html>
<html>
<head>
    <title> The University</title>
    <link rel="stylesheet" type="text/css" href="<?php echo base_url(); ?>css/style.css">
</head>
<body>
<div class="topnav">
    <?php $this->load->view('header'); ?>
</div>
<?php
print_r($result);
?>

<form method="post" action="<?php echo(base_url() . "University/std_course_assign/" . $result[0]['course_id'] . "/" . $result[0]['course_i'] . "/" . $result[0]['course_id']); ?>">
    <table>
        <tr>
            <td>
                <select name='course_id_1'>
                    <option value="">--- Select Course ---</option>
                    <?php
                    for ($i = 0; $i < count($result); $i++) { ?>
                        <?php echo "<option value=" . $result[$i]['course_id'] . ">" . $result[$i]['course_name'] . "</option>"; ?>
                        <?php
                    }
                    ?>
            </td>
            <td>
                <select name='course_id_2'>
                    <option value="">--- Select Course ---</option>
                    <?php
                    for ($i = 0; $i < count($result); $i++) { ?>
                        <?php echo "<option value=" . $result[$i]['course_id'] . ">" . $result[$i]['course_name'] . "</option>"; ?>
                        <?php
                    }
                    ?>
            </td>
            <td>
                <select name='course_id_3'>
                    <option value="">--- Select Course ---</option>
                    <?php
                    for ($i = 0; $i < count($result); $i++) { ?>
                        <?php echo "<option value=" . $result[$i]['course_id'] . ">" . $result[$i]['course_name'] . "</option>"; ?>
                        <?php
                    }
                    ?>
                    <input type="hidden" name="std_id" value="<?= $std_id ?>">
                    <input type="Submit">

            </td>
        </tr>
    </table>
</form>
</body>
</html>  

```

Model Function

```
public function std_course_assign($course_id) {
    $data = array('std_id' => $this->input->post('std_id'),
                  'course_id_1' => $this->input->post('course_id'),
                  'course_id_2' => $this->input->post('course_id'),
                  'course_id_3' => $this->input->post('course_id'),
        );
    $this->db->insert('tbl_assign_course', $data);
    $this->db->where('std_id', $this->input->post('std_id'));
    print_r($data);
}

```