<?php

$cards = [1,2,3,4,5,6,7,8,9,10,11,12,13,14];
shuffle($cards);

$player1 = new ArrayIterator(array_slice($cards,0,7));
$player2 = new ArrayIterator(array_slice($cards,6,7));

$m = new MultipleIterator();
$m->attachIterator($player1);
$m->attachIterator($player2);

$pointsP1 = 0;
$pointsP2 = 0;
foreach($m as $currentCards) {
    $text = 'player 1 has "%d" and player 2 "%d"';
    echo sprintf($text, $currentCards[0], $currentCards[1]);
    
    $number = 2;
    if ($currentCards[0] > $currentCards[1]) {
        $number = 1;
    }
    
    echo PHP_EOL .
        sprintf('point goes to player %d', $number) .
        PHP_EOL . PHP_EOL;
    $points = 'pointsP' . $number;
    $$points++;
}

$number = 2;
if ($pointsP1 > $pointsP2) {
    $number = 1;
}
echo sprintf('player %d wins!', $number);

player 1 has "3" and player 2 "12"
point goes to player 2

player 1 has "6" and player 2 "10"
point goes to player 2

player 1 has "9" and player 2 "14"
point goes to player 2

player 1 has "2" and player 2 "8"
point goes to player 2

player 1 has "7" and player 2 "5"
point goes to player 1

player 1 has "4" and player 2 "13"
point goes to player 2

player 1 has "12" and player 2 "11"
point goes to player 1

player 2 wins!

• PHP 5.6 parameter unpacking
• Why time is a bad randomizer seed
• Filtering elements of an Iterator

PHP 8.2, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8