PHP pivots an array of records to an array of series or an array of series to an array of records

SimplePivoter.php

<?php

/*
Utility class that pivots an array of records to an array of series
or an array of series to an array of records

Author : sfaut <https://github.com/sfaut>
Publication date : 2024-03-23
Tested with PHP 8.3.3
*/

class SimplePivoter
{
    /*
        Returns a pivoted $data from records to series

        Input :

        [
            ['country' => 'France', 'capital' => 'Paris', 'continent' => 'Europa'],
            ['country' => 'Japan', 'capital' => 'Tokyo', 'continent' => 'Asia'],
        ]

        Output :

        [
            'country' => ['France', 'Japan'],
            'capital' => ['Paris', 'Tokyo'],
            'continent' => ['Europa', 'Asia'],
        ]
    */
    public static function recordsToSeries(array $data): array
    {
        $result = [];
        foreach ($data as $record) {
            foreach ($record as $key => $value) {
                $result[$key][] = $value;
            }
        }
        return $result;
    }

    /*
        Returns a pivoted $data from series to records

        Input :

        [
            'country' => ['France', 'Japan'],
            'capital' => ['Paris', 'Tokyo'],
            'continent' => ['Europa', 'Asia'],
        ]

        Output :

        [
            ['country' => 'France', 'capital' => 'Paris', 'continent' => 'Europa'],
            ['country' => 'Japan', 'capital' => 'Tokyo', 'continent' => 'Asia'],
        ]
    */
    public static function seriesToRecords(array $data): array
    {
        $result = [];
        foreach ($data as $key => $values) {
            foreach ($values as $i => $value) {
                $result[$i][$key] = $value;
            }
        }
        return $result;
    }
}