How to set an array type session?

[eluser]BnoL[/eluser]
Hi all,

I'm a new to CI, so please help me

My question is: How can I set an array type session with CI?

My problem is I want to set array type session, just like:

Code:

$_SESSION['fruit'][] = "apple";
// code ...
// and then continue to add:
$_SESSION['fruit'][] = "banana";
...

in plain PHP. How can I do this with CI?

Thanks in advance and sorry for my bad English