RE: [PHP4BETA] compiler ?

At 04:10 31/07/99 , Sander Pilon wrote:

Several features - it's going to be a fairly feature rich product. Speed isn't one of the features - there's no speed improvements involved in the entire idea of the script->file compiler. Is it my rusty memory, or is this contradictive with previous statements?

Could be your rusty memory, could be bad phrasing on my part. There are going to be several modules, that happily interact with each other (after we taught them to:), but are technically separate. One is the script->file compiler. What it does is compile scripts into binary representation that's platform independent, and is smart enough to load them and execute them too. There's little performance gain involved in using it - unless you have very complex scripts that take a long time to compile each time, and the binary loader would do the job faster. Then there's the optimizer - which takes an input stream of Zend intermediate code, and outputs a better stream. This has considerable speed up in it, often 2x-3x. It can be coupled with the script->file compiler, i.e., you could compile a script, optimize it, and save it to a binary file - so that every time you load it afterwards, it's already compiled and optimized. Finally, there's the persistent registry, that saves compiled representations of your script in memory. This too happily interacts with the optimizer (i.e., if you have the optimizer loaded, the script will be compiled once, optimized, and the optimized representation will be saved in memory). All in all, products-wise, I think the optimizer will be integrated with both the script->file compiler and the persistent registry, the script->file compiler being aimed at people who wish to commercially distribute their scripts, and the persistent registry and very very very very busy sites - both address commercial companies, as you can tell (if there'll be cases where there are very busy non commercial sites, we'd happily license it to them for free). Zeev -- Zeev Suraski <zeev@zend.com> http://www.zend.com/ For a PGP public key, finger bourbon@netvision.net.il