[phplib] PHPlib session using PHP4 sessions implementation: the code From: Max Derkachev (kot <email protected>)
Date: 11/30/00

I've made an implementation of PHPLib's Session class that uses PHP4
native sessions.
It uses PHPLib's CT_* custom storage containers, and functioning just
like good old PHPLib (I guess :)). It is almost fully compatible with
PHPLib 7.2 distribution.
For me, it works pretty well, my benchmark (script execution timing)
showed almost 2x performance boost (Pentium200 Linux Debian 2.2 box), I
guess because of using session_encode in serialize() method instead of
serialize() written in php. Also there is no need now in using eval() in
thaw(), since php now takes care for it.
To use it, copy the files to PHPLib's directory and make appropriate
changes in prepend.php.
I haven't got the sense of using $sess->in property, and did not
included complete support for it, and you should change something in
auto_init file, if you use auto_init, since it is called every time the
script is executed. I use Cart class, and changed my setup.inc that way:

<?php
 global $sess, $cart;
 if (!$sess->is_registered('cart')) $cart = new My_Cart;
 $cart->start();
?>
to make sure that the $cart object won't be reinitialized and all cart
data lost, if the object is a registered session variable.

$sess->freeze is excluded from page_close() since php takes care of
saving session data, and there is no need to call page_close anymore, if
you're not using User class, I guess.

I tested it with an existing application built with PHPLib 7. It works
here at php-4.0.3pl1 as Apache module, CT_Sql container and mysql's
DB_Sql. All the classes except Session remain unchanged. No changes in
the database. Some changes made to page.inc (page_open() and
page_close()). I tried it with php4.0.2, but there was a weird error -
it seemed that prepend.php was cached somewhere, and php issued an error
(trying to redeclare classes from files require()'d by prepend.php). I
swear I did not included that files twice :). I did even try to hack
prepend.php to change require() to require_once(), include_once() or
die(), etc. No luck. With php4.0.3pl1, however, it works perfectly.
I'm not sure that User class will work with that implementation, I guess
some changes to the User class should be done (methods freeze() and
thaw(), I suppose), but I did not look through it since I don't use the
User class currently.

I'd be very appreciated if someone send me a
note/corrections/improvements/etc. I'd be happy to see my code in CVS
tree also :). Good luck. 

--
Best regards,
Max A. Derkachev mailto:kot <email protected>
Symbol-Plus Publishing Ltd.
phone: +7 (812) 324-5353
http://www.Books.Ru -- All Books of Russia

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