What's your table structure look like? I've done this in a couple projects. I use a parent child relationship. Usually I make it so you can expand and collapse the tree by clicking on a plus or minus, the script I've attached doesn't have this feature for simplicity sake. parent child description 1 0 Category 2 1 Sub-category 3 2 Sub-sub-category 4 1 Another sub-category 5 0 Category 6 5 Sub-category etc... Create a recursive function (a function that calls itself) that starts where the child = 0, then looks for child = parent. Keeping track of the indenting is tricky, but not impossible. Since it is recursive, it probably does use a lot of queries, so don't know if it's what you want or not. The script I've included works for a table named "structure" with the following fields: structure ------------------------------------- s_parent int not null auto_increment, primary key (s_parent) s_child int s_desc varchar(255) I tested the script on this table just now, after taking out a lot of junk that was doing other things (adding graphics, keeping track of expansion, etc). I don't warrent or support this script in any way shape or form. To the best of my knowledge it works as described above, and you can use it however you like, but like I said, it's just for use as an example. Oh, and if you use it, include the comment at the top please. :) Thanks. -----Original Message----- From: Blain [mailto:Blain@gmx.ch] Sent: Wednesday, March 26, 2003 9:35 PM To: Leif K-Brooks; php-db@lists.php.net Subject: AW: Generating view of tree? If you can sort it and give all entrys a indent number its easy to read the tree out. -----Ursprungliche Nachricht----- Von: Leif K-Brooks [mailto:eurleif@buyer-brokerage.com] Gesendet: Donnerstag, 27. Marz 2003 03:19 An: php-db@lists.php.net Betreff: Generating view of tree? I have a table with a tree. Thing is, I need to generate a view of it like: Category Sub-category Sub-sub-category Another sub-category Another category Sub-category Any way to do this, without using a huge number of queries? Using MySQL. -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
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