Re: CVS update: php3/functions

On Sun, 27 Dec 1998, Rasmus Lerdorf wrote: > I think making this table persistent would be the key to speeding things > up. Typically a PHP script will have 2 or 3 different regular expressions > on a page and that page will be hit many times. Cacheing on a per-request > basis probably doesn't buy anybody much, and it would in fact slow things > down because the extra code needed to create the cache without ever > getting a cache hit would come into play. However, as soon as you cache > across requests you are going to see performance improvements. Well, it's not that bad as you make it. Nevertheless, I've implemented the described way of caching which uses one separate hash table. This code isn't perfect, at least - if someone uses different regular expressions all the time, he will suffer from cache misses and from the resulting slow down. It will also increase the need for memory as the number of elements isn't limited currently. Using a local setting could help in this case which could selectively turn off caching of regular expressions. Regards, Sascha Schumann | Consultant | finger sas@schell.de | for PGP public key -- PHP Development Mailing List http://www.php.net/ To unsubscribe send an empty message to php-dev-unsubscribe@lists.php.net For help: php-dev-help@lists.php.net