note 55457 added to function.printer-write

I copied these lines <?php $handle = printer_open(); printer_write($handle, "Text to print"); printer_close($handle); ?> and executed in my system.But..Its not working. It is showing this fatal error.. Fatal error: Call to undefined function printer_open() in c:\wamp\www\test\print.php on line 2 Anybody pls help me...pls.... Regards, Stephen ---- Manual Page -- http://www.php.net/manual/en/function.printer-write.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+55457 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+55457&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+55457&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+55457&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+55457&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+55457&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+55457&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+55457&report=yes Search -- http://master.php.net/manage/user-notes.php