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Today, we will be looking at session in PHP.
Session is a way to store information in variables to
be used a crossed multiple pages. Session can be
useful when you want to pass information across
multiple pages and you want the information stored
on the server. A simple session can be illustrated
when you open an application, makes some
changes then closes it. This process (opening,
changing and closing of the application) represent a
complete session.
Using Session In PHP
Before you can use session in PHP, you must first
start a session. This can be done using the
session_start(). This function must be called before
any HTML is sent to the browser. So it is advisable
to always start your session immediately after the
PHP opening tag.
continue reading: http://tutorialslodge.com/session-php/