CODEWITHSUNDEEP
phparrayssortingmultidimensional-arraymax
Er Nilay Parekh
Er Nilay Parekh

Reputation: 587

How to get max amount of value in same key in array

How to get max amount of value in same key in array

E.x

I have this array. 

Array
(
    [id] => 1
    [amount] => 4
)
Array
(
    [id] => 1
    [amount] => 3
)
Array
(
    [id] => 2
    [amount] => 3
)

I want below result . means i want max amount value for same id .please provide solution for same.

Array
(
    [id] => 1
    [amount] => 4
)
Array
(
    [id] => 2
    [amount] => 3
)

Upvotes: 2

Views: 196

Answers (2)

Hossam
Hossam

Reputation: 1146

You could use usort to sort the array by the highest amount first, then just get the first result back. For example:

usort($theBigArray, function($a, $b) {
    return ($a['amount'] - $b['amount']);
});

print_r($theBigArray);

Upvotes: 1

bassxzero
bassxzero

Reputation: 5041

<?php
    $bigArray = [
        [
            'id' => 1,
            'amount' => 4
        ],
        [
            'id' => 1,
            'amount' => 3
        ],
        [
            'id' => 2,
            'amount' => 3
        ]
    ];


    $output = [];

    foreach($bigArray as $innerArray){
        if(!isset($output[$innerArray['id']])){
            $output[$innerArray['id']] = $innerArray;
        }
        elseif( $output[$innerArray['id']]['amount'] < $innerArray['amount'] ){
            $output[$innerArray['id']] = $innerArray;
        }
    }

    print_r($output);
    exit;

Upvotes: 1

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