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Re: Undefined variable

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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:

> echo $a, PHP_EOL;
PHP Notice:  Undefined variable: a in /usr/local/bin/myreadline.php(42) : eval()'d
code on line 1

> var_dump($a);
PHP Notice:  Undefined variable: a in /usr/local/bin/myreadline.php(42) : eval()'d
code on line 1
NULL
> if ($a==0.0) echo "yes\n";
PHP Notice:  Undefined variable: a in /usr/local/bin/myreadline.php(42) : eval()'d
code on line 1
yes
> var_dump($a);
PHP Notice:  Undefined variable: a in /usr/local/bin/myreadline.php(42) : eval()'d
code on line 1
NULL

/Str.

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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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