I need to encode a javascript function into a JSON object in PHP.

This:

$function = function(){};

$message = Hello;



$json = array(   

      'message' => $message,

      'func' => $function

);

echo json_encode($json);

outputs:

{message:Hello,func:function(){}}

What I want is:

{message:Hello,func:function(){}}

Can I do this with json_encode?