<?php

$input = file('input', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);

$numbers = explode(',', array_shift($input));
$input = array_map(fn($line) => explode(' ', str_replace('  ', ' ', trim($line))), $input);
$cards = array_chunk($input, 5);
$lastNumber = $lastCard = false;
foreach ($numbers as $numberIndex => $number) {
    $cards = checkNumber($cards, $number);
    while (($cardId = isWinner($cards)) !== false) {
        $lastCard = $cards[$cardId];
        $lastNumber = $number;
        unset($cards[$cardId]);
    }
}
echo calculateScore($lastCard, $lastNumber); //23670

var_dump($lastCard);
var_dump($cardId);
var_dump(count($cards));

function calculateScore($card, $number)
{
    echo array_sum(array_map('array_sum', $card)) * $number;
}

function isWinner($cards)
{
    foreach ($cards as $cardIndex => $card) {
        foreach ($card as $rowId => $cardRow) {
            if (array_sum(array_column($card, $rowId)) === 0) {
                return $cardIndex;
            }
            if (array_sum($cardRow) === 0) {
                return $cardIndex;
            }
        }
        $diagonal1 = $diagonal2 = false;
        for ($i = 0; $i < 5; $i++) {
            $diagonal1 += (int)$card[$i][$i];
            $diagonal2 += (int)$card[$i][4 - $i];
        }
        if ($diagonal1 === 0) {
            return $cardIndex;
        }
        if ($diagonal2 === 0) {
            return $cardIndex;
        }
    }
    return false;
}

function checkNumber($cards, $number)
{
    foreach ($cards as $cardIndex => $card) {
        foreach ($card as $rowId => $cardRow) {
            if (($index = array_search($number, $cardRow)) !== false) {
                $cards[$cardIndex][$rowId][$index] = '';
            }
        }
    }
    return $cards;
}