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@ 2022-04-25T11:56:00Z

<?php

function array_transpose(array|object $object_or_array): array|object {
    $levelOneType = gettype($object_or_array);
    if (!in_array($levelOneType, ['array', 'object'])) {
        throw new Exception("Error: array_transpose() expects parameter 1 to be an array or object, $levelOneType given");
    }
    $result = [];
    foreach ($object_or_array as $rowKey => $row) {
        $levelTwoType = gettype($row);
        if (!in_array($levelTwoType, ['array', 'object'])) {
            throw new Exception("Error: array_transpose() expects parameter 1 to contain rows of arrays or objects, $levelTwoType given");
        }
        foreach ($row as $columnKey => $value) {
            $result[$columnKey][$rowKey] = $value;
        }
    }
    return $result;
}

$names = ['Anne', 'Burt', 'Chad', 'Dawn'];
$ages = [18, 22, 20, 21];
$pets = ['dog', 'cat', 'fish', 'bird'];

var_export(array_transpose(compact(['names', 'ages', 'pets'])));

Output for git.master, git.master_jit, rfc.property-hooks: array ( 0 => array ( 'names' => 'Anne', 'ages' => 18, 'pets' => 'dog', ), 1 => array ( 'names' => 'Burt', 'ages' => 22, 'pets' => 'cat', ), 2 => array ( 'names' => 'Chad', 'ages' => 20, 'pets' => 'fish', ), 3 => array ( 'names' => 'Dawn', 'ages' => 21, 'pets' => 'bird', ), )

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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