Application Variable in PHP

Are you missing Application Variable in PHP. Many who comes from ASP will look for it.
There is no application variable in PHP. PHP have only session variable. You need to do little extra work for application session variable in PHP.

Application variable is used to pass information among different session. Unlike session, application variable can be passed between different session. For this you can use file read/write or database based management of those value.

Here find PHP Application variable emulated:
Application Variables in PHP