[Andreas]

Optimization suggestion

PHP Code:

function check_age($userid,$forumid)
{
    global $forumcache;
    $userinfo = fetch_userinfo($userid);
    $now = date('d-m-Y');
    $bday = explode("-", $userinfo['birthday']);
    $now = explode("-", $now);
    $j = $now[2] - $bday[2];
    return (int)($j >= $forumcache["$forumid"]['age_value']);
}


function check_lock($forumid)
{
    global $forumcache;
    return $forumcache["forumid"]['age_locked'];
} 


Furthermore, you could remove the Locked Yes/No setting and define 0 being unlocked, would save memory.
And your age-check does only check the Year, should also check month/day.