So I have the following data array:
array (size=10)
0 => int 5
1 => string '5B1' (length=7)
2 => int 4
3 => string '4B1' (length=7)
4 => int 3
5 => string '3B1' (length=7)
6 => int 2
7 => string '2B1' (length=7)
8 => int 1
9 => string '1B1' (length=7)
What I want to do is sort it to this:
array (size=10)
0 => string 5B1
1 => int '5' (length=7)
2 => string 4B1
3 => int '4' (length=7)
4 => string 3B1
5 => int '3' (length=7)
6 => string 2B1
7 => int '2' (length=7)
8 => string 1B1
9 => int '1' (length=7)
The hierarchy of the numbers never change although there is an additional level as seen here:
7 -> 6b2 -> 6b1 -> 6 -> 5b2 -> 5b1 -> 5 4b2 -> 4b1 -> 4 -> 3b2 -> 3b1 -> 3 -> 2b2 -> 2b1 -> 2 -> 1b2 -> 1b1 -> 1 -> b2 -> b1
I am wondering what is the best way to sort this in PHP?
On the one hand I am thinking of looping through the static hierarchy array from top to bottom and using this to order the dynamic array.
Any other suggestions?
The answer to this was quite simple, Mark Baker put me on the right track.
I originally used a convoluted mix between rsort, krsort and array_flip to get an almost working solution.
Using rsort with the SORT_NATURAL flag did the trick.