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Groups > comp.lang.php > #9203

Re: Undefined variable

From Denis McMahon <denismfmcmahon@gmail.com>
Newsgroups comp.lang.php
Subject Re: Undefined variable
Date 2013-04-26 03:27 +0000
Organization A noiseless patient Spider
Message-ID <klcs7o$2pp$6@dont-email.me> (permalink)
References (1 earlier) <kl8blr$89f$1@speranza.aioe.org> <c3ba030a-95f4-455c-9472-6028773556e9@v20g2000yqj.googlegroups.com> <ats6ngFiblvU1@mid.uni-berlin.de> <klbsbb$2pp$3@dont-email.me> <attgkqFrjncU1@mid.uni-berlin.de>

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On Thu, 25 Apr 2013 22:05:46 +0200, M. Strobel wrote:

> Am 25.04.2013 20:23, schrieb Denis McMahon:
>> On Thu, 25 Apr 2013 10:10:24 +0200, M. Strobel wrote:
>> 
>>> I propose a new reading of "PHP Notice: undefined variable...", it
>>> goes:
>>>
>>>    Hey, you are using a variable that is not defined. I will put a
>>>    null
>> ..........................................................^^^^
>> 
>> *might*
>> 
>>>    into it.
>>>    Because I will make it easy for you.
>>>    If you don't care I won't either.
>> 
>> + some lines:
>>      I may put some random value there instead.
>>      The double I use now might not be the string I use next.
>>      Or the integer I used last.
>>      
>>>    Maybe you expected the variable to contain something,
>>>    and your app logic will be screwed up.
>>>    It will be _a_lot_of_ work to find the error, but that's your
>>>    problem.
>> 
>> (edited to be more complete and future proof)
>> 
>> 
> ah, a new community project :-)
> 
> I thought (and read) the variables were defined after being accessed,
> but they are not. Very strange decisions of the PHP makers. Console log:

Yes, but that always might change in the next update ;)

I did wonder about:

"The array of doubles I'm using now might not be the class of kitten 
hugging monkeys I'll use next week or the tuples of solar hydrogen I used 
yesterday."

but that seemed perhaps a little too complex for some of the readers 
here. :)

(although the kitten hugging monkeys may be more intelligent than some of 
those readers too ... and come to that, so might the tuples of solar 
hydrogen)

-- 
Denis McMahon, denismfmcmahon@gmail.com

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Thread

Undefined variable Question Boy <question.boy@hotmail.com> - 2013-04-23 19:16 -0700
  Re: Undefined variable Question Boy <question.boy@hotmail.com> - 2013-04-23 20:06 -0700
  Re: Undefined variable Richard Yates <richard@yatesguitar.com> - 2013-04-23 20:08 -0700
    Re: Undefined variable Question Boy <question.boy@hotmail.com> - 2013-04-23 20:27 -0700
      Re: Undefined variable Question Boy <question.boy@hotmail.com> - 2013-04-23 20:49 -0700
        Re: Undefined variable David Robley <me@home.invalid> - 2013-04-24 17:34 +0930
        Re: Undefined variable Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-24 05:53 -0400
        Re: Undefined variable Chuck Anderson <cycletourist@invalid.invalid> - 2013-04-24 14:02 -0600
          Re: Undefined variable Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-24 22:23 -0400
            Re: Undefined variable Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-24 22:24 -0400
              Re: Undefined variable Tim Streater <timstreater@greenbee.net> - 2013-04-25 08:36 +0100
                Re: Undefined variable Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-25 05:13 -0400
                Re: Undefined variable Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-25 14:04 +0200
                Re: Undefined variable The Natural Philosopher <tnp@invalid.invalid> - 2013-04-25 13:12 +0100
            Re: Undefined variable Chuck Anderson <cycletourist@invalid.invalid> - 2013-04-25 01:03 -0600
              Re: Undefined variable Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-25 05:22 -0400
                Re: Undefined variable Chuck Anderson <cycletourist@invalid.invalid> - 2013-04-25 23:59 -0600
      Re: Undefined variable The Natural Philosopher <tnp@invalid.invalid> - 2013-04-24 10:24 +0100
        Re: Undefined variable Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-24 05:55 -0400
  Re: Undefined variable Christoph Becker <cmbecker69@gmx.de> - 2013-04-24 12:20 +0200
    Re: Undefined variable Question Boy <question.boy@hotmail.com> - 2013-04-24 06:51 -0700
      Re: Undefined variable "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-04-25 10:10 +0200
        Re: Undefined variable Denis McMahon <denismfmcmahon@gmail.com> - 2013-04-25 18:23 +0000
          Re: Undefined variable "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-04-25 22:05 +0200
            Re: Undefined variable Denis McMahon <denismfmcmahon@gmail.com> - 2013-04-26 03:27 +0000
              Re: Undefined variable Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-26 21:30 +0200

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