在PHP中对数据数组进行排序的最佳方法

Question

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?

Answer 1

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.