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Undefined Constants behavior in PHP6

php.internals

news.php.net

18 years ago

I was wondering if someone already think about modifying the actual behavior
of undefined constants in php6.
I'm desperate with some

if(DEBUG) print_r($_SESSION);

- and lot others case -

Is there a possibility undefined constants ( strings ) return "null" :x ?
I do not think it's a mistake, since echo "{$array[foo]}" is not good and
"{$array['foo']}" is

131

Alexey Zakhlestin

18 years ago

and what's wrong with the following syntax?

if(defined('DEBUG')) print_r($_SESSION);

I don't think there's a need to change anything here…

On 10/19/07, news.php.net <131.php@cloudyks.org> wrote:
> I was wondering if someone already think about modifying the actual behavior
> of undefined constants in php6.
> I'm desperate with some
>
> if(DEBUG) print_r($_SESSION);
>
> - and lot others case -
>
> Is there a possibility undefined constants ( strings ) return "null" :x ?
> I do not think it's a mistake, since echo "{$array[foo]}" is not good and
> "{$array['foo']}" is
>
> 131
>
> --
> PHP Internals - PHP Runtime Development Mailing List
> To unsubscribe, visit: http://www.php.net/unsub.php
>
>


-- 
Alexey Zakhlestin
http://blog.milkfarmsoft.com/

news.php.net

18 years ago

""Alexey Zakhlestin"" <indeyets@gmail.com> a écrit dans le message de news:
cd5680a20710190213n7d3f89b4v34e22c07c4c0f896@mail.gmail.com...

> and what's wrong with the following syntax?
>
> if(defined('DEBUG')) print_r($_SESSION);

I might have a define("DEBUG",$_SERVER["REMOTE_ADDR"]=="myip"); included -
on not

I know defined exists but, more than the simple "existance" of a constants,
sometime, it's "value" might be more important, and auto-string conversion
is a wrong behavior i think.

of course, i could if(defined("DEBUG") && DEBUG ) ... that's so.... php not.

Is there a way to have a " nullyfy_undefined_constants=on" setting ?

Christian Schneider

18 years ago

news.php.net wrote:

> I might have a define("DEBUG",$_SERVER["REMOTE_ADDR"]=="myip"); included -
> on not

Just make sure you always set DEBUG, shouldn't be too hard if your code
has any structure ;-)

- Chris

news.php.net

18 years ago

It's not always a structural issue :/
I'm sure non defined string interpretation is a bad thing

I'm not a php core writter, but it have to be, even a little, more
complicated to use undefined constants as there "string" value, than as
"null"

Maybe i'm the only one thinking that way.
I'll try to handle this by myself with parsekit & runkit ...

Alexey Zakhlestin

18 years ago

On 10/21/07, 131 <131.php@cloudyks.org> wrote:

> It's not always a structural issue :/

It is

> I'm sure non defined string interpretation is a bad thing

it is definitely a bad thing, but it is a documented bad thing and I
believe there are still some scripts which rely on this

> I'm not a php core writter, but it have to be, even a little, more
> complicated to use undefined constants as there "string" value, than as
> "null"
>
> Maybe i'm the only one thinking that way.
> I'll try to handle this by myself with parsekit & runkit ...

use of undefined constants produces a E_NOTICE
you can catch these in error-handler while debugging and fix the
structure of code accordingly.

--
Alexey Zakhlestin
http://blog.milkfarmsoft.com/