페도라 코어 2 시스템에서 기본으로 설치되는 PHP 4.3.6을 사용하고 있습니다.
이상하게 코드를 잘못 써도 에러가 출력되지 않아서 php.ini 의 display_errors 항목을
On으로 바꿨더니 예전처럼 PHP 에러는 제대로 나오는데 ,
문제는 최근의 1.0.7 모니위키에서도 아래와 같은 경고 메세지가 나온다는 점입니다.

반복되는 메세지이므로 일부만 붙였습니다만, PHP 5가 릴리즈될 정도로 버전이 올라갔으니 이
점을 고려하여 코드를 작성하고, 테스트해주시면 좋겠습니다~

Warning: Call-time pass-by-reference has been deprecated - argument passed by
value; If you would like to pass it by reference, modify the declaration of
[runtime function name](). If you would like to enable call-time pass-by-
reference, you can set allow_call_time_pass_reference to true in your INI
file. However, future versions may not support this any longer.
in /home/xeraph/test/moniwiki/wiki.php on line 706

Warning: Call-time pass-by-reference has been deprecated - argument passed by
value; If you would like to pass it by reference, modify the declaration of
[runtime function name](). If you would like to enable call-time pass-by-
reference, you can set allow_call_time_pass_reference to true in your INI
file. However, future versions may not support this any longer.
in /home/xeraph/test/moniwiki/wiki.php on line 786

Warning: Call-time pass-by-reference has been deprecated - argument passed by
value; If you would like to pass it by reference, modify the declaration of
call_user_func(). If you would like to enable call-time pass-by-reference,
you can set allow_call_time_pass_reference to true in your INI file. However,
future versions may not support this any longer.
in /home/xeraph/test/moniwiki/wiki.php on line 1710

Warning: Call-time pass-by-reference has been deprecated - argument passed by
value; If you would like to pass it by reference, modify the declaration of
call_user_func(). If you would like to enable call-time pass-by-reference,
you can set allow_call_time_pass_reference to true in your INI file. However,
future versions may not support this any longer.
in /home/xeraph/test/moniwiki/wiki.php on line 1710

Warning: Call-time pass-by-reference has been deprecated - argument passed by
value; If you would like to pass it by reference, modify the declaration of
call_user_func(). If you would like to enable call-time pass-by-reference,
you can set allow_call_time_pass_reference to true in your INI file. However,
future versions may not support this any longer.
in /home/xeraph/test/moniwiki/wiki.php on line 1720