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Re: loose thinking

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Peter H. Coffin wrote:

> On Wed, 25 Jan 2012 04:49:19 +0100, Thomas 'PointedEars' Lahn wrote:
>> Peter H. Coffin wrote:
>>> On Tue, 24 Jan 2012 14:32:52 +0100, M. Strobel wrote:
>>>> Okay I see it is well documented. I just started testing.
>>>>
>>>> I am angry about it because not even isset() respects the null value
>>>> here. I think it makes more sense this way: isset($a[null]) should
>>>> return false, because there is no null index.
>>> Parens change precedence. Even on functions.
>>
>> You are missing the point, which is: `null' is being converted to the
>> primitive string value ''.  A key of an *associative* array may be the
>> empty string.  And that is good so.
> 
> That's the *same point*, not "missing the point". I'm sorry that I'm not
> wandering down the same mental path would, but I don't think in exactly
> the same terms you do. Not everybody does.

I do not follow.  Please explain why you think (operator) precedence has 
something to do with this problem.

>> What is questionable here is the implicit type conversion of non-numeric
>> values to string.  But PHP is not alone there, so this behavior can be
>> expected.  It might be nice if E_STRICT reported such spurious
>> conversions
>> or there was an even stricter mode that forbade them.  Perhaps in PHP 6
>> ???

There were no question marks in my posting, there was an ellipsis.  Please 
get a working newsreader; Unicode and UTF-8 are anything but new or exotic 
nowadays.
 
> null's a special case that's NOT reported. Other cases of this are
> reported.
> 
> hellsop /home/hellsop
> [07:57:10] $ cat foo.php
> <?php
> 
> $arr = array( q => 'r');
> 
> print_r($arr);
> 
> ?>
> hellsop /home/hellsop
> [07:57:12] $ php -f foo.php
> PHP Notice:  Use of undefined constant q - assumed 'q' in
> /home/hellsop/foo.php on line 3

Please notice that this is only a notice.

> Array
> (
>     [q] => r
> )
> hellsop /home/hellsop
> [07:57:15] $

Because `null' is a reserved word, thus cannot be the identifier of a 
constant.  Where `null' is the value of another expression (like a variable 
reference), PHP shows its being influenced by C, Perl and Tcl, and its 
applicability as a shell scripting language, where (with the exception of C) 
loose typing is common and you do not have to declare variables before you 
refer to them.


PointedEars
-- 
    realism:    HTML 4.01 Strict
    evangelism: XHTML 1.0 Strict
    madness:    XHTML 1.1 as application/xhtml+xml
                                                    -- Bjoern Hoehrmann

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Thread

loose thinking "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-01-24 11:57 +0100
  Re: loose thinking "Álvaro G. Vicario" <alvaro.NOSPAMTHANX@demogracia.com.invalid> - 2012-01-24 14:04 +0100
    Re: loose thinking "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-01-24 14:32 +0100
      Re: loose thinking The Natural Philosopher <tnp@invalid.invalid> - 2012-01-24 13:41 +0000
        Re: loose thinking Jerry Stuckle <jstucklex@attglobal.net> - 2012-01-24 09:35 -0500
      Re: loose thinking "Peter H. Coffin" <hellsop@ninehells.com> - 2012-01-24 08:16 -0600
        Re: loose thinking "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-01-24 17:35 +0100
          Re: loose thinking The Natural Philosopher <tnp@invalid.invalid> - 2012-01-24 16:59 +0000
            Re: loose thinking "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-01-24 19:11 +0100
        Re: loose thinking Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-01-25 04:49 +0100
          Re: loose thinking "Peter H. Coffin" <hellsop@ninehells.com> - 2012-01-25 07:58 -0600
            Re: loose thinking Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-01-25 20:37 +0100
      Re: loose thinking "Álvaro G. Vicario" <alvaro.NOSPAMTHANX@demogracia.com.invalid> - 2012-01-24 16:20 +0100
        Re: loose thinking The Natural Philosopher <tnp@invalid.invalid> - 2012-01-24 15:43 +0000
        Re: loose thinking "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-01-24 19:43 +0100
      Re: loose thinking Arno Welzel <usenet@arnowelzel.de> - 2012-01-24 17:02 +0100
        Re: loose thinking "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-01-24 17:28 +0100

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