ZF-12072: Zend_Controller_Action_Helper_Url doesn't encode arrays
$_POST decodes correctly myvar%5B0%5D=1. This is returned from Zend_Request::getParam correctly:
Array( 0 => 1 )
when Zend_Controller_Action_Helper_Url::simple($module, $controller, $action, array('myvar' => array(0 => 1))); is called it triggers an E_WARNING because urlencode isn't able to encode arrays.
i believe this can be easily fixed using http_build_query in Zend_Controller_Action_Helper_Url