note 30695 added to language.references

It should be pointed out that references are UNROLLED if stored in a session, that is, a copy is made for each reference. If you compare references to hard links in a Unix file system, as this chapter does, think of "storing a session" as a "cp -R". That really bit me when I nearly finished my library and wondered why I could not use it with PHP's session management. :-/ -- http://www.php.net/manual/en/language.references.php http://master.php.net/manage/user-notes.php?action=edit+30695 http://master.php.net/manage/user-notes.php?action=delete+30695 http://master.php.net/manage/user-notes.php?action=reject+30695