To use query string in the production environment, you have to use some alternate approach. You can add parameter along with route to hold the query string value. But the query string needs to be passed using "/" mark between the route and query string instead of using "?" mark.
/route-name/key=value&key=value1
and the routing configuration need to be
'router' => array(
'routes' => array(
'<route-name>' => array(
'type' => 'segment',
'options' => array(
'route' => '<route-name>[/:action][/:queryPara][/]',
'constraints' => array(
'action' => '[a-zA-Z][a-zA-Z0-9_-]*',
'queryPara' => '[a-zA-Z][a-zA-Z0-9_-&=]*',
),
'defaults' => array(
'controller' => 'Application\Controller\Index',
'action' => 'index',
)
),
),
)),
You can create a function that will extract the query string and returns the array containing key=>value pairs of query string.
And in controller you have to call the function by passing the query string which will be stored in "/queryPara" part after the route name using the following statement you will get the string
$this->params('queryPara')
Hope it helps
Thanks