Another undefined variable problem

Anon

I just installed php on win 2000, and firts problem I had was the usual "undefined variable" error. So I set register_globals = on, and solved the problem.

However, if I try to access a variable which is not in the Querystring then i still get the error.

So if i was trying to get the variable $mode, from the following
http://www.somed.com/test.php?mode=
then it works,
but if mode is not there it does not.
http://www.somed.com/test.php (this causes Undefined variable: mode)

Anyone know what this problem is or how to fix it. I'm fairly certain it is a php setting, because the code works fine on my Linux box.

tshafer

You might need to edit your php.ini file's error reporting section by commenting out everything you see here, and adding 'error_reporting=7' as done at the bottom

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Error handling and logging ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

; error_reporting is a bit-field. Or each number up to get desired error
; reporting level
; E_ALL - All errors and warnings
; E_ERROR - fatal run-time errors
; E_WARNING - run-time warnings (non-fatal errors)
; E_PARSE - compile-time parse errors
; E_NOTICE - run-time notices (these are warnings which often result
; from a bug in your code, but it's possible that it was
; intentional (e.g., using an uninitialized variable and
; relying on the fact it's automatically initialized to an
; empty string)
; E_CORE_ERROR - fatal errors that occur during PHP's initial startup
; E_CORE_WARNING - warnings (non-fatal errors) that occur during PHP's
; initial startup
; E_COMPILE_ERROR - fatal compile-time errors
; E_COMPILE_WARNING - compile-time warnings (non-fatal errors)
; E_USER_ERROR - user-generated error message
; E_USER_WARNING - user-generated warning message
; E_USER_NOTICE - user-generated notice message
;
; Examples:
;
; - Show all errors, except for notices
;
;error_reporting = E_ALL & ~E_NOTICE
;
; - Show only errors
;
;error_reporting = E_COMPILE_ERROR|E_ERROR|E_CORE_ERROR
;
; - Show all errors except for notices
;
;error_reporting = E_ALL; display all errors, warnings and notices
;
error_reporting = 7

trooper

I know that switching globals on and lowering the error reporting levelis the quick answer but you should really be looking to declare all your vars.

My main reason for saying this is that code is often ported to other servers where the settings different.

If you write an app for a box that has globals on and error reporting to E_ALL ~ NOTICE and then the script is ported then you're in trouble.

However if you write an app that sits on a box where the error reporting is E_ALL and globals are off then it don't matter if it gets ported as it will still work on boxes where these are switched on.

I'll admit that i like the easy life and one way of achieving that is to not have to re-write code, the tradeoff of the initial extra work certainly pays off when any of my code is ported to other boxes
😃