I copied your code and tried again ~
the output of the first action:
registry-in
Code:
yoyo variable index has been registered!!
array(1) { ["index"]=> string(3) "123" }
but the second action:
registry-out
Code:
Fatal error: Uncaught exception 'Zend_Exception' with message
'No entry is registered for key 'test'' in
/opt/lampp/lib/Zend/Registry.php:145
It seems that, the
$value can be registry within the action
registry-in and get correct inside, but cannot get it back from the action
'registry-out. Do I need to make some configurations let the registry work?
Out of topic:

On the other hand, I think that, my code is works when I was new an instance of Zend_Registry and apply Zend_Registry:setInstance. It is because that, there is the only object of Zend_Registry inside the Zend_Registry when singleton was applied. Of cause the previous registered registry will be destroy after setInstance() was called, but the it should be work if I never
re-setInstance() , right?? If my concept is not correct please let me know because I am just a newbie in PHP and Zend framework ~
