objects in a list

[Anon]

Hi all,

I'm new to php and need to create an engine that moves items in a list up / down positions thought I am having trouble trouble getting the theory behind it right and the code too.

to give you an idea of what im doing, say this is the list

1 = a
2 = b
3 = c

etc

I want to move c to 1 and therefore a = b and b = 3 ...

If anyone has done this before and can lend a hand or show me an example like this I would most gratefull :-)

• Richard

[Anon]

Your best bet is to store everything in an array and then use the various array_* functions like array_push() and array_pop(). Then you just suck the last thing off the list, then push it into the beginning of the list. There are arguments/other functions that will re-index the array in that case. Check the manual under 'array functions.' (the idea is that there are already containers for 'lists' called 'arrays' and functions to do what you want, so you don't need to write them yourself) Good luck.

[roboteddy]

A great tutorial for array functions:

http://www.devshed.com/Server_Side/PHP/ArrayManip/page1.html