sweep.php

<?php

$teams = [
    'Austria',
    'Belgium',
    'Croatia',
    'Czech Republic',
    'Denmark',
    'England',
    'Finland',
    'France',
    'Germany',
    'Hungary',
    'Italy',
    'North Macedonia',
    'Netherlands',
    'Poland',
    'Portugal',
    'Russia',
    'Scotland',
    'Slovakia',
    'Spain',
    'Sweden',
    'Switzerland',
    'Turkey',
    'Ukraine',
    'Wales',
];

$players = [
    'Alan',
    'Dom',
    'Leo',
    'Rob',
    'Ross',
    'Gaj',
    'Dan',
    'David',
    'Rhia',
    'Joe',
    'Clem',
    'Claudia',
    'Claudia K',
    'John',
    'Kyle',
    'Pete',
    'Corentin',
    'Arthur',
    'Fletch',
    'Johno',
    'Matt',
    'Chatity #1',
    'Charity #2',
];

$picks = [];

foreach($players as $player) {
    $pick = array_rand($teams);
    $picks[$teams[$pick]] = $player;

    echo "Player $player has picked team " . $teams[$pick] . " from the hat." . PHP_EOL;
    unset($teams[$pick]);
}