note 31989 added to security.database

We're told that ';' and '--' are potentially dangerous strings because of their special significance to MySQL. But we're not told how to defend against them. We can't really search and replace those strings because they may be valid (e.g. in msg board post). Addslashes() doesn't touch them. So I'm still scratching my head -- should be worry about those strings? If so, how? -- http://www.php.net/manual/en/security.database.php http://master.php.net/manage/user-notes.php?action=edit+31989 http://master.php.net/manage/user-notes.php?action=delete+31989 http://master.php.net/manage/user-notes.php?action=reject+31989