How to get the hight value for multidimensional array - php

Question

I have the following multidimensional array:
array(
array(
[id] => 65,
[user_id] => 1,
[total] => 1
),
array(
[id] => 66,
[user_id] => 3,
[total] => 2
),
array(
[id] => 67,
[user_id] => 5,
[total] => 4
),
)
How do I get the array with the highest value for total and I still get the full key Value for the array like this:
array(
[id] => 67,
[user_id] => 5,
[total] => 4
)

Answer 1

Try this:
$total = array();
foreach ($data as $key => $row) {
$total[$key] = $row['total'];
}
// this sorts your $data array by `total` in descending order
// so the max for `total` is the first element
array_multisort($total, SORT_DESC, $data);
And now, use $data[0];

Answer 2

Order the arrays on id using usort():
function cmp($a, $b)
{
return strcmp($b["id"], $a["id"]);
}
usort($arr, 'cmp'); // $arr is your array
Then the first array has your desired values.
See the documentation on usort for more information: http://php.net/manual/en/function.usort.php

Answer 3

$array = [
['id' => 1, 'total' => 1],
['id' => 2, 'total' => 4],
['id' => 3, 'total' => 5],
];
function cmp($a, $b) {
return ($a['total'] < $b['total']) ? 1 : -1;
}
usort($array, 'cmp');
print_r($array[0]); // output ['id' => 3, 'total' => 5]

Answer 4

You can use array_column() with array_search():
$totals = array_column( $array, 'total' );
$result = $array[ array_search( max( $totals ), $totals ) ];
array_column() return an array with 'total' values. Use it to retrieve the key of main array with max total value.
But... what about following array?
$array = array(
array(
'id' => 65,
'user_id' => 1,
'total' => 4
),
array(
'id' => 66,
'user_id' => 3,
'total' => 2
),
array(
'id' => 67,
'user_id' => 5,
'total' => 4
),
array(
'id' => 68,
'user_id' => 6,
'total' => 2
)
);
To filter all max values, you can use this:
$max = max( array_column( $array, 'total' ) );
$result = array_filter
(
$array,
function( $row ) use ( $max )
{
return $row['total'] == $max;
}
);
print_r( $result );
Output:
Array
(
[0] => Array
(
[id] => 65
[user_id] => 1
[total] => 4
)
[2] => Array
(
[id] => 67
[user_id] => 5
[total] => 4
)
)
Put in $max variable max value of 'total' column, then use it to filter original array and retrieve all rows having it as total.
Read more about array_column()
Read more about array_filter()

Answer 5

You can install xdebug for var_dump
and look you array by
var_dump($array);
after you can get needing array by key
$array[3]; //example for question context
or get by foreach for analyses you array
$arrayResult = array();
foreach($array as $_arr) {
if($_arr['user_id'] == 5) {
$arrayResult = $_arr;
}
}
var_dump($arrayResult);
this is example for your question context too