Basically AppCache is an implementation of the Application scope found in the ColdFusion and ASP environments in PHP.
The Application scope allows the creation of application level variables, a level above the session variables and one level below server level variables.
· PHP 5 or higher
· Data is not persistent. All data will be kept in the server's RAM and not on his hard drive.
· Data will be lost if the daemon is restarted or the cache expires. Should be used for run-time caching.