[development] coding standard question

Steve Rude steve at achieveinternet.com
Mon Aug 27 23:52:25 UTC 2007

Hi Andy,

This is really interesting.  I know very little about the internals of 
php, but several sites that I read claimed it was less cpu cycles.  This 
is good info.

Also, if this is wasting anyones time, please feel free to disregard.  
You do not need to read nor respond to this. 

Having a desire to help the project improve performance should hardly be 
scoffed at or shot down.  This is how to discourage people from wanting 
to help.  If my testing is incorrect, please feel free to correct and 
give information on how to better test.

I have spent quite a bit of time on things that many people have felt 
are "worthless" (Memcache, APC Cache, core cache serialization patch) 
and have had a good performance impact.  It is my area of interest.  I 
apologize if it offends anyone for posting to this list about it.  Is 
there a better place to post about this stuff?

Steve Rude

andy at spiders-lair.com wrote:
>>>> 1326ms vs. 1382ms is 60ms, and when normal page load times are
>>>> somewhere around 200ms, it makes a substantial difference.
>>> Even if we disregard the fact that microtime tests have a big stddev,
>> We shouldn't do that. The posted results are totally worthless without
>> an error estimate.
>> People, stop wasting everybody's time, read
> http://drupal.org/node/79237, or preferably an introduction to
>> statistics and a howto on doing experiments in first year phyiscs, then
>> re-do the tests.
> imo the tests are pretty pointless. Given that PHP uses the zend hashtable to store all lists of this type (including constants) then this link shows how the table hash key is generated using the DJBX33A algorithm:-
> http://lxr.php.net/source/ZendEngine2/zend_hash.h#315
> Seems to me that upper or lower case won't have an effect on this (not one that microtime is going to perceive anyhow) so this hardly seems worth following up.
> If you really feel the "need for speed" then the only suggestion is to keep all constant definitions to 8 characters or less. Hardly practical in the real world.
> --Andy

Steve Rude + Lead Developer
(800) 618-8777 x 202


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