open
validateId
read
doRead: 
read
Array
(
    [0] => bar
)
$_SESSION is not empty
write
destroy
close
$_SESSION is empty
Array
(
    [0] => Content-Type: text/plain; charset=utf-8
    [1] => Cache-Control: max-age=0, private, must-revalidate
    [2] => Set-Cookie: sid=deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; Max-Age=0; path=/; secure; HttpOnly
)
shutdown
