captcha

controller----------------
public function index()
    {
            $content['query'] = $this->home_model->lihat_home();
                if($content['query']) {
                    $profile['query'] = $this->home_model->lihat_profile();
                        if($profile['query']) {
                            $slide['query'] = $this->gambar_model->lihat_front();
                        if($slide['query']) {

$this->load->helper('captcha');
$vals = array(
'word'   => '',
'img_path'   => './captcha/',
'img_url'    => 'http://localhost/karyawan/captcha/',
'font_path'  => './system/fonts/arial.ttf',
'img_width'  => '150',
'img_height' => 30,
'expiration' => 7200
);
$cap = create_captcha($vals);
$data = array(
'captcha_id'    => '',
'captcha_time'  => $cap['time'],
'ip_address'    => $_SERVER['REMOTE_ADDR'],
'word'          => $cap['word']
);
$query = $this->db->insert_string('captcha', $data);
$this->db->query($query);
$isi['image']=$cap['image'];

                $array = array('home' => $this->load->view('home',$content,true),
                                    'profile' => $this->load->view('profile',$profile,true),
                                    'contact' => $this->load->view('contact', '',true),
                                    'register' => $this->load->view('register', $isi,true),
                                    'slide' => $this->load->view('slide', $slide,true) );

                $this->load->view('index', $array);
                }           }       }
    }

view-------------------------
<div class="row">

        <div class="span8">
            <form class="form-horizontal" id="registerHere" method='post' action='<?php echo base_url();?>register/user_register'>
            <fieldset>
            <legend>Registration</legend>
                <div class="control-group">
                <label class="control-label" for="input01">Nama Lengkap</label>
                    <div class="controls">
                            <input type="text" class="input-xlarge" id="user_name" name="user_name" rel="popover" placeholder="Enter your complete name." data-original-title="Full Name">
                      </div>
                </div>

     <div class="control-group">
        <label class="control-label" for="input01">Email</label>
          <div class="controls">
            <input type="text" class="input-xlarge" id="user_email" name="user_email" rel="popover" placeholder="What’s your email address?" data-original-title="Email">

          </div>
    </div>

    <div class="control-group">
        <label class="control-label" for="input01">Username</label>
          <div class="controls">
            <input type="text" class="input-xlarge" id="username" name="username" rel="popover" placeholder="6 characters or more! Be tricky" data-original-title="Username" >

          </div>
    </div>

    <div class="control-group">
        <label class="control-label" for="input01">Password</label>
          <div class="controls">
            <input type="password" class="input-xlarge" id="pwd" name="pwd" rel="popover" placeholder="6 characters or more! Be tricky" data-original-title="Password" >

          </div>
    </div>
    <div class="control-group">
        <label class="control-label" for="input01">Confirm Password</label>
          <div class="controls">
            <input type="password" class="input-xlarge" id="cpwd" name="cpwd" rel="popover" placeholder="Re-enter your password for confirmation." data-original-title="Re-Password" >

          </div>
    </div>


     <div class="control-group">
        <label class="control-label" for="input01">Jenis Kelamin</label>
          <div class="controls">
            <select name="gender" id="gender" >
                            <option value="">Gender</option>
                            <option value="male">Male</option>
                            <option value="female">Female</option>
            </select>
          </div>
    </div>

    <div class="control-group">
    <table>
    <tr><td  width="100%" align="center"><?php echo $image; ?></td>
    <tr><td  style="font-size:12px">Masukkan kata yang terdapat pada gambar diatas:</td></tr><tr>
    <td align="center"><input type="text" name="captcha" value="" /></td></tr>
    </table>
    </div>

    <div class="control-group">
        <label class="control-label" for="input01"></label>
          <div class="controls">
           <button type="submit" class="btn btn-success" rel="tooltip" title="first tooltip">Create My Account</button>
          </div>

    </div>
      </fieldset>
    </form>

controller register/user_register------------------------
function user_register()
    {
        $this->load->model('register_model');
        $reg['query'] = $this->register_model->add();
        if($reg['query']) {
            $content['query'] = $this->home_model->lihat_home();
            if($content['query']) {
                $profile['query'] = $this->home_model->lihat_profile();
                if($profile['query']) {
                    $slide['query'] = $this->gambar_model->lihat_front();
                    if($slide['query']) {

                    $expiration = time()-7200;
 $this->db->query("DELETE FROM captcha WHERE captcha_time < ".$expiration);
 $sql = "SELECT COUNT(*) AS count FROM captcha WHERE word = ? AND ip_address = ? AND captcha_time > ?";
 $binds = array($_POST['captcha'], $this->input->ip_address(), $expiration);
 $query = $this->db->query($sql, $binds);
 $row = $query->row();
 if ($row->count == 0)
 {
 echo "Kamu harus menuliskan kata yang ada pada gambar dengan benar";
 }      else {

                    $array = array( 'home' => $this->load->view('home',$content,true),
                                    'profile' => $this->load->view('profile',$profile,true),
                                    'contact' => $this->load->view('contact', '',true),
                                    'register' => $this->load->view('register_sukses', '',true),
                                    'slide' => $this->load->view('slide',$slide,true) );

                    $this->load->view('index', $array);
                        }   }   }   }
        }else {
                $content['query'] = $this->home_model->lihat_home();
                if($content['query']) {
                    $profile['query'] = $this->home_model->lihat_profile();
                    if($profile['query']) {
                        $slide['query'] = $this->gambar_model->lihat_front();
                        if($slide['query']) {
                    $array = array( 'home' => $this->load->view('home',$content,true),
                                    'profile' => $this->load->view('profile',$profile,true),
                                    'contact' => $this->load->view('contact', '',true),
                                    'register' => $this->load->view('register_gagal', '',true),
                                    'slide' => $this->load->view('slide',$slide,true) );

                    $this->load->view('index', $array);
            }
            }   }
        }
    }