re-ordering Arrays

[Duell]

A pic's worth a thousand words.

I have a list in an array, and would like some type of GUI that allows an intuitive way to re-order the items in the array. I've seen the way that netflix does it (text input fields with the number in the field, but I think that's asking for trouble. Up and down links are better imho. I would think that someone has already written this for something else, and I'm not overly familiar with the array functions. A complex slice/splice function of some kind? I fry my brain just thinking of how you would accomplish this with those functions 😉

[laserlight]

hmm... you could have the link contain the current position and the flag to move up or down.
Then after checking for an out-of-bounds attempt, simply swap with the other element.

[RossC0]

To extend laserlight idea: Have the current elements index in the a href and and identifier for up or down. i.e. <a href="reorder.php?index=1&direction='up">

Pseudo code:
If up:-

1) put the value of the selected item into a temp variable ie. $temp = $item[url.index]
2) Get the item above and set it to the index of the moved item. i.e. $item[url.index] = $item[url.index-1];
3) Get the last element in the Array and set it to the index-1. $item[url.index-1] = $temp

if down:-
1) $temp = $item[url.index]
2) $item[url.index] = $item[url.index+1];
3) $item[url.index+1] = $temp

You should put some checking in if they are trying to move the first or last item. Even if you hide the move up link for the first item or the down link for the last - its still good practise.

[Duell]

Excellent. Thanks guys. That's the exact push I needed to get this going!