Save it where. I'm sorry but I don't understand the concept of "caching". Could you try and explain it a bit...
Originally Posted by traq
"Where" depends on how you handle it. MySQL does some caching internally. Memcache stores data on the server. You might cache dynamically generated html markup in .txt files, or session-specific data in your $_SESSION.
I was going to link to the Wikipedia page, but it seems uncharacteristically akward and helpless.
Basically, a "cache" is just an organized way to save data you plan on using again later, thereby saving time by only retrieving/ preparing it once and using it several (or many) times.
Adrian ~ facebook | gist/github
['18.104.22.168','22.214.171.124'] // ip,ip array!
"Take that sticker *off* your hat; you look stupid" --Wil Wheaton
Hmmmmm, thanks for that traq.