Show data from 2 tables + zend framework - php

Question

I want to show data from my database into my table in html. (when i click on a link)
Table "births" fields:
district
year1999
year2000
year2001
year2002
year2003
year2004
year2005
year2006
year2007
year2008
year2009
Table "deaths" fields:
district
year1999
year2000
year2001
year2002
year2003
year2004
year2005
year2006
year2007
year2008
year2009
I will get the data from my database true an ajax call in javascript. I link to an action in my indexcontroller.
Javascript code:
$("#wijken ul li a").click(function(e){
district = ($(this).text());
loadTable(district);
});
function loadTable(district){
var param1 = district;
$.ajax({
url: 'index/getdata',
type: "POST",
data: {param1: param1},
dataType: 'json',
success: function(result)
{
var htmlContent = "";
// HOW CAN I PARSE THE DATA?
htmlContent += '</tbody></table>';
$('#tabel').html(htmlContent);
},
error: function(request, status, error){
alert(request.responseText);
}
});
}
My IndexController:
public function getdataAction()
{
// DISABLE VIEW
$this->view->layout()->disableLayout();
$this->_helper->viewRenderer->setNoRender(true);
// WIJK CLICKED
$district = $this->_request->getParam('param1');
// GET THE BIRTHS/YEAR
$birthMapper = new Frontoffice_Model_BirthMapper();
$array = $birthMapper->read($district);
$this->_response->setBody(json_encode($array));
}
My BirthMapper:
public function read($wijk = null)
{
$table = $this->_dbTable;
$columns = array('wijk' => 'wijk',
'year1999' => 'year1999',
'year2000' => 'year2000',
'year2001' => 'year2001',
'year2002' => 'year2002',
'year2003' => 'year2003',
'year2004' => 'year2004',
'year2005' => 'year2005',
'year2006' => 'year2006',
'year2007' => 'year2007',
'year2008' => 'year2008',
'year2009' => 'year2009',
);
$select = $table->select()
->from($table,
$columns
)
->where('wijk = :wijk')
->bind(array(':wijk' => $wijk))
;
if ($row = $table->fetchRow($select)) {
return $row->toArray();
}
throw new Exception('The requested Births cannot be found');
}
Now I can handle the year1999,year2000,year2001,year2002,year2003,year2004,year2005,year2006,year2007,year2008,year2009 fields in my javascript as result.year1999. But how can I do this for multiple tables? (In javascript and controller)