Question

my script currect have two session called

$_SESSION['mypic']

and

$_SESSION['mypicsrc']

can I combine this two to one session and sub-session?
like this:

$_SESSION['mypic']
$_SESSION['mypic']['src']

Answer 1

the $_SESSION global is an array that will only store strings. If you want to store an array inside a $_SESSION var you have to serialize it first

$data = array( 'src' => '' );
$_SESSION['mypic'] = serialize($data);

then to get it back out you have to deserialize

$data = deserialize($_SESSION['mypic']);

However, you should store your data in a database and then store an id or reference to that particular record in $_SESSION.