[PHP] my php script is very slow. help?

Hi all I have Linux/PHP/MySQL. Some of my script really run very slowly. painfully slow. All data are fetched from the database. The tables in database are indexed. Still some scripts are very slow. I am using nested while and for loops. Any idea how to make them faster? What should I avoid i

[PHP] threaded forum to display replies

Hi I have been coding a threaded forum. A simple one. I have this problem: I cannot show all the replies in a threaded way. I tried a recursive method which takes the messageid and I do like $messageID = $p_id +1; showMessages($messageID); This only works if the messageids are 1 2 3 4 5 6. bu