Online PHP editor | output for 0eqvj

@ 2022-05-16T02:29:03Z

<?php

$array = [
    [['value' => 1100], ['value' => 1000], ['value' => 3000]],
    [['value' => 1200], ['value' => 2000], ['value' => 2000]],
    [['value' => 1300], ['value' => 4000], ['value' => 1000]],
];

var_export(
    array_map(fn(...$col) => $col, ...$array)  // to demonstrate transposition
);

echo "\n---\n";

var_export(
    array_map(
        fn(...$col) => array_sum(array_column($col, 'value')),
        ...$array
    )
);

Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13: array ( 0 => array ( 0 => array ( 'value' => 1100, ), 1 => array ( 'value' => 1200, ), 2 => array ( 'value' => 1300, ), ), 1 => array ( 0 => array ( 'value' => 1000, ), 1 => array ( 'value' => 2000, ), 2 => array ( 'value' => 4000, ), ), 2 => array ( 0 => array ( 'value' => 3000, ), 1 => array ( 'value' => 2000, ), 2 => array ( 'value' => 1000, ), ), ) --- array ( 0 => 3600, 1 => 7000, 2 => 6000, )

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