GET Max array from two array PHP

Question

I want which is the biggest array from following array.

 [13] => Array
        (
            [0] => 1
            [1] => 3
            [2] => 9
        )

[15] => Array
    (
        [0] => 1
        [1] => 5
        [2] => 8
    )

[33] => Array
    (
        [0] => 1
        [1] => 9
        [2] => 13
    )

I want a code that would return last array with key 33. Please Help.

@Nouphal M Compare all values from all array and return array which has highest value from all array.and it is not like that maximum key will come at last. — user2645436
– user2645436, Commented Mar 7, 2014 at 11:23
you mean 13 is the largest number so 33 index will be returned? — Nouphal.M
– Nouphal.M, Commented Mar 7, 2014 at 11:34

Nambi · Accepted Answer · 2014-03-07 11:28:27Z

1

Use max to get the maximum from the keys of your array

$yourarray=array(13 => Array
(
    0 => 1,
            1 => 3,
            2 => 9,
        ),

15 => Array
(
    0 => 1,
        1 => 5,
        2 => 8,
    ),

33 => Array
(
    0 => 1,
        1 => 9,
        2 => 13,
    ));
$arr=max(array_keys($yourarray));
print_r($yourarray[$arr]);

Output:

Array
(
    [0] => 1
    [1] => 9
    [2] => 13
)

edited Mar 7, 2014 at 11:28

answered Mar 7, 2014 at 11:18

Nambi

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2 Comments

user2645436 Over a year ago

Key is not always going to bigger at last.It is not like that array with max key is the highest one.

Nambi Over a year ago

@user2645436 Check my answer it returning the value of the highest key in the array.

daveblake · Accepted Answer · 2014-03-07 11:35:12Z

0

This should do the trick...

<?php

$tests = array(
    13 => array(1,3,9),
    15 => array(1,5,8),
    33 => array(1,9,13)
);

$array_totals = array_map('array_sum', $tests);
krsort($array_totals);
$maxArray = each($array_totals);

var_dump($maxArray);

Gives

array (size=4)
  1 => int 23
  'value' => int 23
  0 => int 33
  'key' => int 33

answered Mar 7, 2014 at 11:35

daveblake

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Comments

ntaso · Accepted Answer · 2014-03-07 11:49:11Z

0

Not the most beautiful thing, but readable ;)

$tests = array(
    13 => array(1,3,9),
    15 => array(1,5,8),
    33 => array(1,9,13)
);

$max = -1;
$max_key = -1;
foreach ($tests as $k => $v) {
    $cur_max = max($v);
    if ($cur_max >= $max) {
        $max = $cur_max;
        $max_key = $k;
    }
}

echo "max: $max; max_key: $max_key";

Gives:

max: 13; max_key: 33

To make it more beautiful: use array_map and sorting.

answered Mar 7, 2014 at 11:49

ntaso

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1 Comment

ntaso Over a year ago

Note to all: His question is a bit unclear, but what he wants is simply the index of the array that contains the biggest value.

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