tupleSort

tupleSort.php

<?php
/**
     * Sort an array by the nested arrays it contains. Helper function for getMatchingBlocks
     *
     * @param   array  $aArray  First array to compare.
     * @param   array  $bArray  Second array to compare.
     *
     * @return int -1, 0 or 1, as expected by the usort function.
     */
    public static function tupleSort(array $aArray, array $bArray): int
    {
        $max = max(count($aArray), count($bArray));
        for ($counter = 0; $counter < $max; ++$counter) {
            if ($aArray[$counter] < $bArray[$counter]) {
                echo('A');
                return -1;
            }

            if ($aArray[$counter] > $bArray[$counter]) {
                echo('B');
                return 1;
            }
        }

        if (count($aArray) == count($bArray)) {
            echo('C');
            return 0;
        }
        if (count($aArray) < count($bArray)) {
            echo('D');
            return -1;
        }

        echo('E');
        return 1;
    }