Simple Flashdata Code for PHP Sessions

[eluser]Aea[/eluser]
systemos, it does look like that code will work, but won't it require additional functions to switch between regular session data, flash data, or even update lifespan? I created a different version which doesn't do value assignments and I think it will be marginally more efficient...

Code:

function _flash_countdown()
    {
    $keys = array_keys($_SESSION);
    
        foreach ($keys as $key) // Confusing Variables, Surely you kid?
        {
            $search = $key.':hl';
            if (isset($_SESSION[$search]))
            {
                if ($_SESSION[$search] <= 0)
                {
                    unset($_SESSION[$key], $_SESSION[$search]);
                }
                else
                {
                    --$_SESSION[$search];
                }
            }
        }
    }