Re: Performance: While or For loop

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On Sat, 2007-03-24 at 14:38 -0400, tedd wrote:
> At 2:24 PM -0400 3/24/07, Robert Cummings wrote:
> >On Sat, 2007-03-24 at 10:21 -0400, tedd wrote:
> >>  At 7:47 PM -0500 3/23/07, Richard Lynch wrote:
> >>  >Folks:
> >>  >
> >>  >How often do you use a loop of any kind in PHP with enough iterations
> >>  >that this is even significant?
> >>  >
> >>  >Write the code that makes sense.
> >>  >
> >>  >Optimize the biggest bottleneck until performance is acceptable.
> >>
> >>  Absolutely -- the time we take discussing these types of concerns
> >>  probably cost more cycles than the sum total of all the "optimized"
> >>  savings in the lifetime of all the computers on earth.
> >
> >I highly doubt it. Computers run a lot these days. There are times when
> >squeezing that last nanosecond makes a difference and the devotion to
> >finding how to squeeze it out is well worth it. Admittedly they may be
> >few and far between, but they do exist.
> 
> And, I highly doubt that the difference is worth considering -- and 
> it's becoming less of a consideration each day.
> 
> Remember, we were talking about the differences between a "for" vs 
> "while" loop.

Ahh, but it was the pre-increment versus post-increment that made the
difference. every bit counts, it's the same problem as energy savings.
If you only do it in one place you don't really see a savings, if you do
it everywhere, it begins to have an impact.

Cheers,
Rob.
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