new manual chapter suggestion

Hi! I think somebody with a closer experience with the PHP C sources maybe can collect some performance tips, like the ones we can catch on the various PHP lists: - use echo "aaa" , "bbb", "ccc" instead of echo "aaa" . "bbb" . "ccc" because with the later you use more memory [Jim] - echo is a little bit faster then print [Rasmus] - preg_*()-s are also faster than ereg()-s [Rasmus] - use mysql_unbuffered_query() [Manual] This would make a new chapter, with some nifty tips about how you can improve the performance of your programs. I am not the person, who can start this chapter, but maybe some PHP-dev gurus :) Goba