如何通过php中的引用传递来定义虚拟变量值

Question

$smarty->assign_by_ref('global_plugin_menu', $dummy = null);

Showing this error when i try to run above line:

Only variables should be passed by reference

Answer 1

Not sure why you need to do this, but:

$dummy = null;
$smarty->assign_by_ref('global_plugin_menu', $dummy);