note 55025 added to function.virtual

When I use the virtual(); function it gives me an error, saying that the function is undefined. I have PHP 4.3.11 on my host's server and I don't know what to do. I am trying to include a cgi script that would be in the /includes/ directory of my site... I have no idea what to do! ---- Manual Page -- http://www.php.net/manual/en/function.virtual.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+55025 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+55025&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+55025&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+55025&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+55025&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+55025&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+55025&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+55025&report=yes Search -- http://master.php.net/manage/user-notes.php