CODEWITHSUNDEEP

phparrayssorting

Reputation: 5471

Move leading array elements to the end so that array starts at a specified element

I was wondering how I could change the ordering of the following array:

Array
(
    [1] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 120
                    [hteam] => Heatherton
                    [ateam] => Dingley
                    [round] => 1
                    [catid] => Seniors
                    [date] => Saturday 14th April, 2012
                    [time] => 12:00am
                    [venue] => Heatherton Recreational Reserve
                )

            [1] => stdClass Object
                (
                    [id] => 121
                    [hteam] => Heatherton
                    [ateam] => Dingley
                    [round] => 1
                    [catid] => Reserves
                    [date] => Saturday 14th April, 2012
                    [time] => 11:45am
                    [venue] => Heatherton Recreational Reserve
                )

        )

    [2] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 122
                    [hteam] => Clayton
                    [ateam] => Heatherton
                    [round] => 2
                    [catid] => Seniors
                    [date] => Saturday 21st April, 2012
                    [time] => 12:00am
                    [venue] => Clayton Reserve
                )

            [1] => stdClass Object
                (
                    [id] => 139
                    [hteam] => Clayton
                    [ateam] => Heatherton
                    [round] => 2
                    [catid] => Reserves
                    [date] => Saturday 21st April, 2012
                    [time] => 12:00am
                    [venue] => Clayton Reserve
                )
        )

    [3] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 123
                    [hteam] => Heatherton
                    [ateam] => St Pauls
                    [round] => 3
                    [catid] => Seniors
                    [date] => Saturday 28th April, 2012
                    [time] => 12:00am
                    [venue] => Heatherton Recreational Reserve
                )

            [1] => stdClass Object
                (
                    [id] => 140
                    [hteam] => Heatherton
                    [ateam] => St Pauls
                    [round] => 3
                    [catid] => Reserves
                    [date] => Saturday 28th April, 2012
                    [time] => 12:00am
                    [venue] => Heatherton Recreational Reserve
                )

        )

    [4] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 124
                    [hteam] => Mordialloc
                    [ateam] => Heatherton
                    [round] => 4
                    [catid] => Seniors
                    [date] => Saturday 5th May, 2012
                    [time] => 02:00pm
                    [venue] => Ben Kavanagh Reserve
                )

            [1] => stdClass Object
                (
                    [id] => 141
                    [hteam] => Mordialloc
                    [ateam] => Heatherton
                    [round] => 4
                    [catid] => Reserves
                    [date] => Saturday 5th May, 2012
                    [time] => 11:45am
                    [venue] => Ben Kavanagh Reserve
                )

        )
)

From ^^ to this:

Array
(

    [3] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 123
                    [hteam] => Heatherton
                    [ateam] => St Pauls
                    [round] => 3
                    [catid] => Seniors
                    [date] => Saturday 28th April, 2012
                    [time] => 12:00am
                    [venue] => Heatherton Recreational Reserve
                )

            [1] => stdClass Object
                (
                    [id] => 140
                    [hteam] => Heatherton
                    [ateam] => St Pauls
                    [round] => 3
                    [catid] => Reserves
                    [date] => Saturday 28th April, 2012
                    [time] => 12:00am
                    [venue] => Heatherton Recreational Reserve
                )

        )

    [4] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 124
                    [hteam] => Mordialloc
                    [ateam] => Heatherton
                    [round] => 4
                    [catid] => Seniors
                    [date] => Saturday 5th May, 2012
                    [time] => 02:00pm
                    [venue] => Ben Kavanagh Reserve
                )

            [1] => stdClass Object
                (
                    [id] => 141
                    [hteam] => Mordialloc
                    [ateam] => Heatherton
                    [round] => 4
                    [catid] => Reserves
                    [date] => Saturday 5th May, 2012
                    [time] => 11:45am
                    [venue] => Ben Kavanagh Reserve
                )

        )
        
        [1] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 120
                    [hteam] => Heatherton
                    [ateam] => Dingley
                    [round] => 1
                    [catid] => Seniors
                    [date] => Saturday 14th April, 2012
                    [time] => 12:00am
                    [venue] => Heatherton Recreational Reserve
                )

            [1] => stdClass Object
                (
                    [id] => 121
                    [hteam] => Heatherton
                    [ateam] => Dingley
                    [round] => 1
                    [catid] => Reserves
                    [date] => Saturday 14th April, 2012
                    [time] => 11:45am
                    [venue] => Heatherton Recreational Reserve
                )

        )

    [2] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 122
                    [hteam] => Clayton
                    [ateam] => Heatherton
                    [round] => 2
                    [catid] => Seniors
                    [date] => Saturday 21st April, 2012
                    [time] => 12:00am
                    [venue] => Clayton Reserve
                )

            [1] => stdClass Object
                (
                    [id] => 139
                    [hteam] => Clayton
                    [ateam] => Heatherton
                    [round] => 2
                    [catid] => Reserves
                    [date] => Saturday 21st April, 2012
                    [time] => 12:00am
                    [venue] => Clayton Reserve
                )
        )
)

So in this example, the array starts on number 3, goes to 4, then back to number 1 again.. if that makes sense?

Upvotes: -1

Views: 2646

Answers (3)

mickmackusa

Reputation: 47982

The depth/type of each element is irrelevant to this task. If you know what zero-based position should become the new starting element, pass that integer into the following script. Demo

$array = [1, 2, 3, 4];
$startAtPos = 2;

var_export(
    array_merge(
        array_splice($array, $startAtPos),
        $array
    )
);

Output:

array (
  0 => 3,
  1 => 4,
  2 => 1,
  3 => 2,
)

Upvotes: 0

Reputation: 8218

You could use the array_keys() function to extract all the keys, then make a map from old keys to new keys, and then finally construct a new array using the new keys, with values obtained from the old array using the new key-old key map.

Upvotes: 1

Valeriy Gorbatikov

Valeriy Gorbatikov

Reputation: 3529

You can use usort php function that allows to define your own sort functions.

Upvotes: 2

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