public static function getRole($role)
{
if (self::$roles == null) {
self::$roles = array();
self::$roles[self::ROLE_READ] = self::PERM_READ;
self::$roles[self::ROLE_WRITE] = self::PERM_READ + self::PERM_WRITE;
self::$roles[self::ROLE_POWER] = self::$roles[self::ROLE_WRITE] + self::PERM_POWER;
self::$roles[self::ROLE_MANAGER] = self::$roles[self::ROLE_POWER] + self::PERM_MANAGER;
self::$roles[self::ROLE_ADMIN] = self::$roles[self::ROLE_MANAGER] + self::PERM_ADMIN;
}
return ifset(self::$roles, $role, 0);
}
