多数组排序[重复]

Question

This question already has an answer here:

• PHP Sort a multidimensional array by element containing date 9 answers

My Array is like this

Array (
[0] => Array (
        [salesID] => 7
        [creditID] => 9
        [amount] => 80400.00
        [due_date] => 2018-12-12
        [status] => no
        [given_date] => 2018-09-30
        [av_class] => table-warning
        [name] => Kumaari
        [contact] => 0
    )

[1] => Array (
        [salesID] => 3
        [creditID] => 8
        [amount] => 500.00
        [due_date] => 2019-06-25
        [status] => yes
        [given_date] => 2018-09-30
        [av_class] => table-success
        [name] => Zayan
        [contact] => 0765894520
    )
 )

I want to short / re-order main array by sub array's value : [due_date] Please help me. Main array key is not necessary, but sub array keys cannot be changed.

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Answer 1

You need to do the code like this.

<?php
    $inventory = array(
        array(
            "salesID"=>7,
             "creditID"=>9,
             'amount'=>80400.00,
             'due_date'=>strtotime(2018-12-12),
             'status' => 'no',
             'given_date' => 'no',
            'av_class' => 'no',
            'name' => 'no',
            'contact' => 0
            ),
        array(
            "salesID"=>3,
             "creditID"=>8,
             'amount'=>500.00,
             'due_date'=>strtotime(2019-06-25),
             'status' => 'yes',
             'given_date' => '2018-09-30',
            'av_class' => 'table-success',
            'name' => 'Zayan',
            'contact' => '0765894520'
            )

    );
    $date = array();
    foreach ($inventory as $key => $row)
    {
        $date[$key] = $row['due_date'];
    }
    array_multisort($date, SORT_DESC, $inventory);
    echo '<pre>';
    print_r($inventory);
  ?>

This will sort the array according to due date in descending order.But you need to use 'strtotime()' function with date in array.