* Ian Bicking <[EMAIL PROTECTED]> [010529 22:28]:
> Baruch Even <[EMAIL PROTECTED]> wrote:
> > PHP by itself is not persistent at all, PHP3 can't persist anything and
> > PHP4 can with appropriate add-ons, specifically PHP4 can feature an
> > optimizer and a cache, where the optimizer optimizes the PHP code and
> > the cache keeps the optimized P-code in store. There is no persistency
> > of data, unless you program it in the php code itself.
>
> The interpreter is persistent in mod_php, though, isn't it? This
> means an overhead to read and compile the page and user libraries, but
> that's considerably less overhead (at least compared to loading the
> interpreter and the code that is standard in PHP).
The interpreter itself is either a module (mod_php) or a cgi, as a
module it is persistent as a cgi it's a compiled C program that gets
loaded.
> I think Zend's products do caching of user code, but that's a
> commercial product.
There are free cache modules for PHP4, I believe there is an ongoing
work to create a free optimizer for PHP4.
--
Baruch Even
http://baruch.ev-en.org/
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