Сделать турнирную сетку

    <?php
    $data = array(
        0 => array('stage' => '1', 'first_opponent' => 'Vayass', 'second_opponent' => 'tima', 'game_over' => '2'),
        1 => array('stage' => '1', 'first_opponent' => 'F_B*', 'second_opponent' => 'User16', 'game_over' => '2'),
        2 => array('stage' => '1', 'first_opponent' => 'User17', 'second_opponent' => 'eSFo', 'game_over' => '1'),
        3 => array('stage' => '1', 'first_opponent' => 'User19', 'second_opponent' => 'User20', 'game_over' => '1'),
        4 => array('stage' => '1', 'first_opponent' => 'User21', 'second_opponent' => 'Iv', 'game_over' => '1'),
        5 => array('stage' => '1', 'first_opponent' => 'User23', 'second_opponent' => 'User24', 'game_over' => '1'),
        6 => array('stage' => '1', 'first_opponent' => 'Marius', 'second_opponent' => 'NaZZg001', 'game_over' => '2'),
        7 => array('stage' => '1', 'first_opponent' => 'User28', 'second_opponent' => 'User29', 'game_over' => '1'),
        8 => array('stage' => '2', 'first_opponent' => 'Vayass', 'second_opponent' => 'eSFo', 'game_over' => '2'),
        9 => array('stage' => '2', 'first_opponent' => 'F_B*', 'second_opponent' => 'User29', 'game_over' => '1'),
        10 => array('stage' => '2', 'first_opponent' => 'User20', 'second_opponent' => 'User24', 'game_over' => '2'),
        11 => array('stage' => '2', 'first_opponent' => 'Iv', 'second_opponent' => 'Marius', 'game_over' => '2'),
        12 => array('stage' => '3', 'first_opponent' => 'Vayass', 'second_opponent' => 'User20', 'game_over' => '0'),
        13 => array('stage' => '3', 'first_opponent' => 'User29', 'second_opponent' => 'Iv', 'game_over' => '0')
    );
    $win = array(1 => 'second_opponent', 2 => 'first_opponent');
    $winColor = '008F00';
    $lossColor = 'BF0000';
    $drawColor = '000000';
    $colors = array(
        0 => array('first' => $drawColor, 'second' => $drawColor),
        1 => array('first' => $lossColor, 'second' => $winColor),
        2 => array('first' => $winColor, 'second' => $lossColor)
    );
 
    function walkdesc($stage, $members = false, $html = array()) {
        global $data, $win, $colors;
        foreach($data as $key => $row) {
            if($row['stage'] == $stage and ($members === false or in_array($row[$win[$row['game_over']]], $members))) {
                unset($data[$key]);   // Сократим лишние итерации
                $rowspan = $stage > 1 ? (' rowspan="' . pow(2, $stage - 1) . '"') : '';
                $first = "<span style=\"color: #{$colors[$row['game_over']]['first']};\">{$row['first_opponent']}</span>";
                $second = "<span style=\"color: #{$colors[$row['game_over']]['second']};\">{$row['second_opponent']}</span>";
                $html[] = "<td{$rowspan}>{$first} -VS- {$second}</td>";
                if($stage > 1) {
                    walkdesc($stage - 1, array($row['first_opponent'], $row['second_opponent']), $html);
                } else {
                    echo '<tr>' . implode('', array_reverse($html)) . '</tr>';
                    if(count($html) === 1) {
                        return;   // Сократим лишние итерации
                    }
                }
                $html = array();
            }
        }
    }
 
    $stages = 3;
    echo '<table border="1"><tr>';
    for($i = 1; $i <= $stages; ++$i) {
        echo "<th>Раунд {$i}</th>";
    }
    echo '</tr>';
    walkdesc($stages);
    echo '</table>';
    ?>