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To: Marcus Boerger <helly@php.net>
CC: Stefan Esser <stefan.esser@sektioneins.de>, 
 PHP Internals List <internals@lists.php.net>
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Subject: Re: [PHP-DEV] Switch Table Extension for PHP
From: dmitry@zend.com (Dmitry Stogov)

Please note that the extension modifies op_array and run-time and it
definitely will break opcode caches. However, it is probably possible to
reimplement it on compiler level (may be with new opcode).

Thanks. Dmitry.

Marcus Boerger wrote:
> Hello Stefan,
> 
>   please discuss with RMs when to merge this in. IMO such a nice locale
> improvment can go in anytime during alpha when RMs approve.
> 
> marcus
> 
> Wednesday, July 30, 2008, 10:18:02 PM, you wrote:
> 
> Hi,
> 
> for everyone interested in getting the last bit of speed out of his PHP
> I created a small extension that overrides the ZEND_CASE opcode and
> optimizes its execution.
> 
> On the first execution of a switch statement it builds up a jumptable
> for all the cases and later execution of the same switch statement is
> then performed by directly looking up the jump target within the jumptable.
> 
> You can find more information and the download at
> 
> http://www.suspekt.org/switchtable/
> 
> I am very interested how it performs with YOUR switch statements. And I
> am also very interested if its implementation unexpectedly breaks YOUR
> switch statements.
> 
> Greeting,
> Stefan

> Best regards,
>  Marcus