Trying to load checkbox results into iFrame in CodeIgniter - codeigniter

Question

I am attempting to learn CodeIgniter. I want to send checkbox values from my view (index.php), via my controller (also called index.php confusingly, but that is what it is called at my company i work at, is this a good idea?), to an iFrame (which has a file called results.php) within my view. So far I get an array on view but only keys being shown - no values from checkboxes - like this:
Array ( [resultsAreaCode] => [resultsNumberType] => [resultsOrder] => [fred] => DAVE [sheep] => cow ) TEST
Here is my view with checkboxes and target iframe, note that one checkbox is populated by PHP/SQL:
<form id="numberOrderForm" action="index/localNumberResults" method="post" enctype='multipart/form-data'>
<div class="wrappers" id="multi-select1Wrapper">
<h2>Area Code</h2>
<select class="dropDownMenus" id="multi-select1" name="multi_select1[]" multiple="multiple">
<?php
//The query asking from our database
$areaCodeSQL = "SELECT ac.Number AS `AreaCode`, ac.Name AS `AreaName`
FROM `AreaCodes` ac"; //SQL query: From the table 'AreaCodes' select 'Number' and put into 'AreaCode', select Name and put into 'AreaName'
$areaCodeResults = $conn->query($areaCodeSQL); // put results of SQL query into this variable
if ($areaCodeResults->num_rows > 0) { // if num_rows(from $results) is greater than 0, then do this:
// output data of each row
foreach($areaCodeResults as $areaCodeResult) //for each item in $areCodeResults do this:
{
$areaNameAndCode = $areaCodeResult['AreaCode'] ." ". $areaCodeResult['AreaName']; //get AreaCode and AreaName from query result and concat them
$areaName = $areaCodeResult['AreaName']; // get AreaName
$areaCode = $areaCodeResult['AreaCode']; //get AreaCode
?><option class="menuoption1" name="menuAreaCode" value="<?php echo $areaCode ?>" ><?php echo $areaNameAndCode; ?></option><?php //Create this option element populated with query result variables
}
}
?>
</select>
</div>
<div class="wrappers" id="multi-select2Wrapper">
<h2>Number Type</h2>
<select class="dropDownMenus" id="multi-select2" name="multi_select2[]" multiple="multiple">
<option class="menuoption2" name="package" value="gold">Gold</option>
<option class="menuoption2" name="package" value="silver">Silver</option>
<option class="menuoption2" name="package" value="bronze">Bronze</option>
</select>
</div>
<div class="wrappers" id="multi-select3Wrapper">
<h2>Order</h2>
<select class="dropDownMenus" id="multi-select3" name="multi_select3[]" >
<option class="menuoption3" name="order" value="sequential">Sequential</option>
<option class="menuoption3" name="order" value="random">Random</option>
</select>
</div>
<input type="submit" value="Submit">
</form>
<div id="resultsTableWrapper">
<iframe id="resultsTable" src="http://my-company.com/localNumberResults" width="100%"></iframe>
</div>
This is within my controller (this I have been told by my tutor is correct though):
class Index extends CI_Controller { // this is my controller!
public function localNumberResults()
{
$data['formdata']= array(
'resultsAreaCode' => $this->input->post("menuAreaCode"),
'resultsNumberType' => $this->input->post("package"),
'resultsOrder' => $this->input->post("order"),
'fred' => 'DAVE',
'sheep' => 'cow'
);
$data['contentlocation'] = 'system/results';
$this->load->view('system/template', $data);
}
}
Can anyone point me in the right direction where i am going wrong? :-)