Hello, I've a bit of a problem and was wondering if anyone out there can help 
straighten it out.  I have never worked with cookies or php sessions before as the 
need for such has never presented itself before.  Up until this 
point I have been using a very customized version of PostNuke but things are to the 
point where I need a custom system from scratch.  I want to use php sessions for my 
user system because they seem to be more transparent to the 
visitor, but there are a few problems that I think I am going to run into based on 
what I've read.  I want to have my website split into several subdomains with a shared 
user system. That is to say that when someone logs into 
foo.mysite.com they'd also be logged into bar.mysite.com when they go to it.  It is my 
understanding that php sessions will not work in this way, being that each subdomain 
has its own sessions.  If this is the case, is there a 
way around this?  If it is the case and there isn't a way around this, is this able to 
be done with regular cookies?  Also, php sessions only last a certain amount of time.  
I'd like for users to remain logged in indefinitely if 
they choose to do so while logging in.  Assuming this is absolutely impossible in 
sessions, is it feasible to use php sessions as the basis of my user system, but use 
cookies as a secondary to it if users choose to remain logged 
in?  Any help at all would be really appreciated, because I'd like to get the new 
version of my site rolled out soon.

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