Re: Anyone wrote persistent variable extension?

derick@php.net wrote:

On Wed, 10 Apr 2002, Yasuo Ohgaki wrote:

PS: I've already added $_APP to session_pgsql that can be used as application variable. If msession and SRM supports it, it would be great. (I know SRM has other way to do the same :)

How exactly does $_APP work in session_pgsql, can where can I find the source for it?

session_pgsql is in /pear/PCEL/session_pgsql/ How it works is very simple. This is what it does, 1) Get 'session_name' as Application name and use 'session_name' as key for application value store in session storage. 2) Load application variable. 3) Unserizalize data and initialize $_APP as auto global. 4) Serialize $_APP, then save back to session storage. Current session_pgsql does not do any locking unless user uses 'serializable' transaction isolation level. Therefore, dirty read is possible by default. I think SRM/msession can implement lock/unlock feature easily for better $_APP handling. (If you are going to implement lock/unlock, I'll implment it with the same API in session_pgsql also) If we need some security for $_APP, we need 'access_key' like I mentioned for persistent variable module. (It's not perfect, but it's okay for most purposes. If user needs higher security, one should use dedicated server. IMO) -- Yasuo Ohgaki