session is a essential part of joomla. It's main use
is for remembering user login, also there are many
usage of it.

when you submit form with input and select
controls,the values of these controls are
passed with form.we get these as POST var-
$_POST["controlname"];

in php there is a command which is used
to redirect to a page from a page.the following
codes shows hot to achieve this.

its a tricky part to create a php multidimensional array
which will be accessed by javascript function.most of the
time it's confusing.i am going to show how to solve the
problem -

implementing video in asp.net or php pages is a great thing!.
there are a lot of players are available in web to show
video free.