public function get_more($data)
{
// Create instance of picture database with 10 items per page and our data as source
$pictureDatabase = new picture($data, 10);
$result = array('success' => TRUE, 'message' => 'Retrieved pictures', 'data' => array());
$callback = isset($_REQUEST['callback']) ? $_REQUEST['callback'] : false;
// Get requested page number from request and return error message if parameter is not a number
$page = 1;
try {
$page = intval($_REQUEST['page']);
} catch (Exception $e) {
$result['success'] = FALSE;
$result['message'] = 'Parameter page is not a number';
}
// Get data from database
$result['data'] = $pictureDatabase->getPage($page);
if (count($result['data']) == 0 || $page >= $pictureDatabase->getNumberOfPages()) {
$result['success'] = TRUE;
$result['message'] = 'No more pictures';
}
// Encode data as json or jsonp and return it
if ($callback) {
header('Content-Type: application/javascript');
$result_data = $callback . '(' . json_encode($result) . ')';
} else {
header('Content-Type: application/json');
$result_data = json_encode($result);
}
return $result_data;
}
