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Re: Why Can't I "define" a Value for a Subscript? PS

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On 08/28/2011 03:36 PM, eBob.com wrote:
> I did a simple experiment that I thought might shed some light on this.
> But instead I just increased my confusion.
>
> I tried the following ...
>
> define('SS1SITE',0);
> echo 'ss1site is: '. "SS1SITE\n";
>
> and the output is ...
>
> ss1site is: SS1SITE
>
> My book says that variable substitution happens within double quotes and
> in my limited experience that is true.
>
> Why isn't the variable substitution happening in this case?
>
> Thanks, Bob
>
> "eBob.com" <eBob.com@totallybogus.com> wrote in message
> news:Cvw6q.176718$k33.110045@en-nntp-13.dc1.easynews.com...
>> I am working with some csv files. To make the program more
>> maintainable and more self-documenting I "define" values to use as
>> subscripts; e.g. ...
>>
>> define('SS2KEY',0);
>>
>> BUT, whereas this produces what I expected ...
>>
>> echo "we have a match - key: $file2cols[0]\n";
>>
>> ... this does not ...
>>
>> echo "we have a match - key: $file2cols[SS2KEY]\n";
>>
>> I see the other text but no value is substitited for $file2cols[SS2KEY]
>>
>> I've wasted so much time on this. Why can't I define constants to use
>> as subscripts?
>>
>> Thanks, Bob
>

   You can. Try:

echo 'we have a match - key: ',$file2cols[SS2KEY],"\n";

or

echo "we have a match - key: {$file2cols[SS2KEY]}\n";

   You must use curly braces around (multi-dimensional) array variables 
and constant keys in strings.


-- 
Norman
Registered Linux user #461062
-Have you been to www.php.net yet?-

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Why Can't I "define" a Value for a Subscript? "eBob.com" <eBob.com@totallybogus.com> - 2011-08-28 15:18 -0400
  Re: Why Can't I "define" a Value for a Subscript?  PS "eBob.com" <eBob.com@totallybogus.com> - 2011-08-28 15:36 -0400
    Re: Why Can't I "define" a Value for a Subscript?  PS Norman Peelman <npeelman@cfl.rr.com> - 2011-08-28 15:53 -0400
    Re: Why Can't I "define" a Value for a Subscript?  PS "Álvaro G. Vicario" <alvaro.NOSPAMTHANX@demogracia.com.invalid> - 2011-08-29 13:43 +0200
  Re: Why Can't I "define" a Value for a Subscript? Denis McMahon <denis.m.f.mcmahon@gmail.com> - 2011-08-28 19:43 +0000
  Re: Why Can't I "define" a Value for a Subscript? Chuck Anderson <cycletourist@invalid.invalid> - 2011-08-28 13:48 -0600
    Re: Why Can't I "define" a Value for a Subscript? "eBob.com" <eBob.com@totallybogus.com> - 2011-08-28 16:57 -0400
      Re: Why Can't I "define" a Value for a Subscript? Richard Damon <news.x.richarddamon@xoxy.net> - 2011-08-28 20:26 -0400
  Re: Why Can't I "define" a Value for a Subscript? "Peter H. Coffin" <hellsop@ninehells.com> - 2011-08-28 15:02 -0500
  Re: Why Can't I "define" a Value for a Subscript? A.Reader <anonymously@example.com> - 2011-08-30 09:55 -0400
    Re: Why Can't I "define" a Value for a Subscript? Jerry Stuckle <jstucklex@attglobal.net> - 2011-08-30 11:09 -0400

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