how_to_jsonp

epidem.php

<?php

$cb = $this->input->post('callback');

$rs = $this->epidem->get_epidem($date_start,$date_end);
$rows = json_encode($rs);

$json = $cb . '({"success": true, "rows": ' . $rows.'})';
// don't render json
#$this->_render_json($json);

echo $json;