Kore Nordmann - PHP / Projects / Politics
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:Author: 		Kore Nordmann
:Date:			Fri, 27 Jul 2007 20:26:41 +0200
:Revision: 		6
:Copyright:		CC by-sa


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eZ conference & FrOSCon
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:Description: Back from the eZ conforence and on my way to the FrOSCon.

After a week at the amazing `eZ conference`__ in Skien (Norway), the city
where the headquater of `eZ systems`__ is located, I will be at the
`FrOSCon`__ for the next two days. I won't forget about the conference so fast
- meeting all the guys, sometimes the first time in "real life", from eZ was
amazing. Thanks for the nice week to all of you - the `crew day`__ was real
fun and the show around the `eZ awards 2006`__ was simply great.

__ http://ez.no/company/events/ez_publish_conference_2006
__ http://ez.no
__ http://www.froscon.de/wiki/FrOSCon
__ http://flickr.com/photos/sebastian_bergmann/sets/72157594172659137/
__ http://flickr.com/photos/sebastian_bergmann/sets/72157594174654835/

I will give a talk about `regular expression`__ on the PHP track organized by
the `PHP Usergroup Dortmund`__ and a talk about `Rendering 3D with PHP`__ at
the main track. Together with `toby`__ there will also be an two hour talk
about "`PHP - best practices`__ ".

__ http://froscon.phpugdo.de/
__ http://phpugdo.de
__ http://programm.froscon.de/events/71.en.html
__ http://schlitt.info/applications/blog/
__ http://programm.froscon.de/events/72.en.html

I hope to see some of you at the FrOSCon tomorrow or on sunday.


Trackbacks
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Comments
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- Luke Welling at Thu, 03 Aug 2006 07:32:00 +0200

  I was not there, but I was having a skim through your slides and wondered
  how confident you are of the recomendation on slide 32 to use pre-increment
  rather than post-increment?

  http://talks.php.net/show/php-best-practices/32

  My quick and dirty benchmark of running your code but with the for loop
  incrementing 1 billion times had post-increment fractionally faster.

  Are there systems where pre-increment is significantly faster?

- kore at Thu, 03 Aug 2006 09:16:00 +0200

  Yes. I gained a overall performance increase due to replacing most of the
  post increments with pre increments of about 10% in Image_3D.

  Pre-Increment does need less operations, what will be significant in not
  optimized languages. I don't know if any PHP Opcode-Caches optimize this, so
  that you perhaps need to disable them for testing.

  Just imagine, that the interpreter is able to just add 1 to a register on
  pre increment, but needs to allocate new memory and add 1 later on post
  increment. If I remember correctly these are 1 vs. 4 operations for the
  interpreter.