sorting by key in multi dimensional array [duplicate]

Question

Array
(
    [0] => Array
        (
            [sales] => 117513.00000000
            [month] => 1
            [month_name] => January
            [year] => 2018
        )

    [1] => Array
        (
            [purchases] => 136350.00000000
            [month] => 9
            [month_name] => September
            [year] => 2017
        )

    [2] => Array
        (
            [sales] => 23025.00000000
            [month] => 11
            [month_name] => November
            [year] => 2017
        )

    [3] => Array
        (
            [sales] => 6447.00000000
            [month] => 12
            [month_name] => December
            [year] => 2017
        )

)

Here I already sorted the array by year wise , but I need to sort by month descending .

Array
(

 [0] => Array
        (
            [sales] => 117513.00000000
            [month] => 1
            [month_name] => January
            [year] => 2018
        )

    [1] => Array
        (
            [purchases] => 6447.00000000
            [month] => 12
            [month_name] => December
            [year] => 2017
        )

    [2] => Array
        (
            [sales] => 23025.00000000
            [month] => 11
            [month_name] => November
            [year] => 2017
        )

    [3] => Array
        (
            [sales] => 136350.00000000
            [month] => 9
            [month_name] => September
            [year] => 2017
        )

)

How can I get the second format , which is sorted by month..

Viraj Amarasinghe - Resiliz · Accepted Answer · 2018-02-12 05:22:41Z

0

Use array_multisort function to do this.

<?php

// Obtain a list of columns
foreach ($data as $key => $row) {
  $month[$key]  = $row['month'];
}


array_multisort($month, SORT_DESC);
?>

answered Feb 12, 2018 at 5:22

Viraj Amarasinghe - Resiliz

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