note 57382 added to function.token-get-all

anybody knows why this token_get_all function could not work? i am running script on server with PHP 5.0.4 installed, and it gives me the "Fatal error: Call to undefined function: token_get_all()" in my file... ---- Manual Page -- http://www.php.net/manual/en/function.token-get-all.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+57382 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+57382&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+57382&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+57382&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+57382&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+57382&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+57382&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+57382&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+57382&report=yes Search -- http://master.php.net/manage/user-notes.php