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Re: $-sign in form input names?

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On 11/4/2014 10:35 AM, Gordon Burditt wrote:
>> That's one person's opinion - and his test is full of holes.  For
>> instance - a timing loop like he shows is worthless in a multitasking
>> system.  Too many other things are going on; even a timer interrupt
>> during the loop can change timings.  You need to have a clean machine
>> (NOTHING else - including network, etc.) running to start.  No
>> paging/swapping.  Even then such tests are suspect because you can't
>> stop everything.  Running on a single tasking system such as MS-DOS
>> would be better, but still not necessarily accurate.
> 
> There are workarounds to this.  Run the test long enough that the
> timer interrupts and other short disturbances will even out for
> both test cases.  For example, run the test for *A FULL YEAR* for
> each case under test.
>

Yes, averaging a lot of runs will minimize the impact of external
factors.  But a small difference can still be incorrect.

>> It's also only valid for one version of PHP - the one he's using.
>> Different versions can operate differently.
>>
>> His whole argument is based on his statement: "I hold the opinion that
>> microoptimization like that is just pointless.".  Good programming
>> practice is not microoptimization!
> 
> I hold the opinion that even if the use of single quotes turns out
> to be megapessimization, you should *still* use them.
> 
> I'm going to argue that you should use single quotes for strings
> that do not need string expansion even if the use of single quotes
> makes the overall time to process the whole web page 100% *SLOWER*.
> That's rather difficult, as presumably you actually *DO* something
> with the string, such as outputting it to the web page, which will
> take a lot longer than even badly written string parsing.
> 
> It's a security and maintenance issue.  A string containing a British
> pound symbol won't cause any problem with string expansion.  Port
> it to a USA environment, making a mass substitution of the British
> pound symbol to '$', and now string expansion may mess up your
> string.  If you don't have warnings turned on about the use of
> undefined variables, this is a difficult error to spot.  And it
> might happen to hit a defined variable.  Or PHP might add some
> other substitution previously unknown.
> 

Very good points, Gordon.

>> I could go on, but the bottom line is - he is obviously biased, and his
>> arguments are full of holes.  I agree with J.O. - single quotes are
>> better unless you need to parse the strings.
> even if single quotes are measurably and significantly slower.
> 



-- 
==================
Remove the "x" from my email address
Jerry Stuckle
jstucklex@attglobal.net
==================

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Thread

$-sign in form input names? sonnichjensen@gmail.com - 2014-11-03 07:23 -0800
  Re: $-sign in form input names? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-11-03 15:54 +0000
  Re: $-sign in form input names? Denis McMahon <denismfmcmahon@gmail.com> - 2014-11-04 01:02 +0000
    Re: $-sign in form input names? "J.O. Aho" <user@example.net> - 2014-11-04 06:55 +0100
      Re: $-sign in form input names? "Christoph M. Becker" <cmbecker69@arcor.de> - 2014-11-04 10:17 +0100
        Re: $-sign in form input names? Jerry Stuckle <jstucklex@attglobal.net> - 2014-11-04 09:23 -0500
          Re: $-sign in form input names? gordonb.2w35u@burditt.org (Gordon Burditt) - 2014-11-04 09:35 -0600
            Re: $-sign in form input names? Jerry Stuckle <jstucklex@attglobal.net> - 2014-11-04 10:37 -0500
          Re: $-sign in form input names? "Christoph M. Becker" <cmbecker69@arcor.de> - 2014-11-04 21:42 +0100
            Re: $-sign in form input names? Jerry Stuckle <jstucklex@attglobal.net> - 2014-11-04 17:01 -0500
              Re: $-sign in form input names? "Christoph M. Becker" <cmbecker69@arcor.de> - 2014-11-04 23:46 +0100
                Re: $-sign in form input names? Jerry Stuckle <jstucklex@attglobal.net> - 2014-11-04 21:19 -0500
        Re: $-sign in form input names? Matthew Carter <m@ahungry.com> - 2014-11-04 09:31 -0500

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