Генерация таблицы истинности

TruthTable.php

<?php declare(strict_types=1);

/**
 * @param int $base
 *
 * @return array[]
 *
 * @throws \InvalidArgumentException
 */
function generateTruthTable(int $base): array
{
    if ($base < 0) {
        throw new InvalidArgumentException('$base variable must be positive');
    }

    $table = [];

    for ($row_num = 0, $row_count = 1 << $base; $row_num < $row_count; $row_num++) {
        $row = [];
        for ($cell_num = 0; $cell_num < $base; $cell_num++) {
            $row[] = (bool)($row_num & 1 << $base - $cell_num - 1);
        }
        $table[] = $row;
    }

    return $table;
}