I need to store large static array as lookup table (read only).
I think there are many applications that has relatively
large static array for application configuration, etc.
$_PERSISTENT is problematic, since user may store unsutable
data for it.
I'll create functions to register/unregister so that user can
only store array that does not have any reference nor objects.
It's still useful for my usage, at least.
$_PERSISTENT could store data key'd to the script that stored it.
$_PERSISTENT_GLOBAL (probably a better name can be found) could just store data accessable to any script under a certain document root. You definitly do not want to share persistent data across document roots (ie virtual servers, etc.).
Shane