PHP Multidimensional sorting

Question

Array
(
    [Baritone Horn] => Array
        (
            [0] => Array
                (
                    [Name] => Baritone Maintenance
                    [Order] => 12
                    [CategoryID] => 13849839018
                )

            [1] => Array
                (
                    [Name] => Baritone Mouthpieces
                    [Order] => 13
                    [CategoryID] => 13850963018
                )

            [2] => Array
                (
                    [Name] => Accessories
                    [Order] => 11
                    [CategoryID] => 13850964018
                )

        ) 

    [Alpen Horn] => Array
        (
            [0] => Array
                (
                    [Name] => Baritone Maintenance
                    [Order] => 12
                    [CategoryID] => 13849839018
                )

            [1] => Array
                (
                    [Name] => Baritone Mouthpieces
                    [Order] => 13
                    [CategoryID] => 13850963018
                )

            [2] => Array
                (
                    [Name] => Accessories
                    [Order] => 11
                    [CategoryID] => 13850964018
                )

        ) 
)

I want to:

1. Sort my array so that the array is ordered alphabetically like "Alpen Horn" then "Baritone Horn". This can be acheived using ksort but there may be a better way after considering my second point.

2. Sort each of the child arrays alphabetically so that each of the child arrays are sorted by [Name].

I know I need to use usort but my experiments so far have been uneventful.

Below is what I want to output:

Array
(
    [Alpen Horn] => Array
        (
            [0] => Array
                (
                    [Name] => Accessories
                    [Order] => 11
                    [CategoryID] => 13850964018
                )
            [1] => Array
                (
                    [Name] => Baritone Maintenance
                    [Order] => 12
                    [CategoryID] => 13849839018
                )
            [2] => Array
                (
                    [Name] => Baritone Mouthpieces
                    [Order] => 13
                    [CategoryID] => 13850963018
                )

        ) 

    [Baritone Horn] => Array
        (
            [0] => Array
                (
                    [Name] => Accessories
                    [Order] => 11
                    [CategoryID] => 13850964018
                )
            [1] => Array
                (
                    [Name] => Baritone Maintenance
                    [Order] => 12
                    [CategoryID] => 13849839018
                )
            [2] => Array
                (
                    [Name] => Baritone Mouthpieces
                    [Order] => 13
                    [CategoryID] => 13850963018
                )

        ) 


)

Answer 1

You can use this function: array_multisort() to achieve it.

Syntax:

bool array_multisort ( array &$array1 [, mixed $array1_sort_order = SORT_ASC
                       [, mixed $array1_sort_flags = SORT_REGULAR
                       [, mixed $... ]]] )

Answer 2

Use array_multisort example:

$array = array
(
    [Baritone Horn] => Array
        (
            [0] => Array
                (
                    [Name] => Baritone Maintenance
                    [Order] => 12
                    [CategoryID] => 13849839018
                )

            [1] => Array
                (
                    [Name] => Baritone Mouthpieces
                    [Order] => 13
                    [CategoryID] => 13850963018
                )

            [2] => Array
                (
                    [Name] => Accessories
                    [Order] => 11
                    [CategoryID] => 13850964018
                )

        ) 

    [Alpen Horn] => Array
        (
            [0] => Array
                (
                    [Name] => Baritone Maintenance
                    [Order] => 12
                    [CategoryID] => 13849839018
                )

            [1] => Array
                (
                    [Name] => Baritone Mouthpieces
                    [Order] => 13
                    [CategoryID] => 13850963018
                )

            [2] => Array
                (
                    [Name] => Accessories
                    [Order] => 11
                    [CategoryID] => 13850964018
                )

        ) 
)

$array = array_multisort($array);