Macierze/matematyka:
http://algorytmy.pl/?id=1712
http://funkcje.net/view/2/8/3310/
http://www.phpmath.com/home
http://conf.phpquebec.com/slides/2005/Mathematical_Programming_with_PHP.pdf
http://phplens.com/lens/php-book/optimizing-debugging-php.php
http://www.linuxjournal.com/article/7213
http://forum.php.pl/lofiversion/index.php/t85554.html
To powinno pomóc.
Edit, a i jeszcze to:
http://www.phpclasses.org/package/2859-PHP-Perform-operations-with-matrices.html
http://algorytmy.pl/?id=1712
http://funkcje.net/view/2/8/3310/
http://www.phpmath.com/home
http://conf.phpquebec.com/slides/2005/Mathematical_Programming_with_PHP.pdf
http://phplens.com/lens/php-book/optimizing-debugging-php.php
http://www.linuxjournal.com/article/7213
http://forum.php.pl/lofiversion/index.php/t85554.html
To powinno pomóc.

Edit, a i jeszcze to:
http://www.phpclasses.org/package/2859-PHP-Perform-operations-with-matrices.html