转盘抽奖活动php源码

<?php
// 奖品数组
$prizes = [
    ['name' => '一等奖', 'weight' => 1],
    ['name' => '二等奖', 'weight' => 5],
    ['name' => '三等奖', 'weight' => 10],
    ['name' => '谢谢参与', 'weight' => 84]
];

// 计算总权重
$totalWeight = array_sum(array_column($prizes, 'weight'));

// 随机生成一个权重值
$rand = mt_rand(1, $totalWeight);

// 根据权重值确定中奖奖品
$winningPrize = null;
$accumulatedWeight = 0;
foreach ($prizes as $prize) {
    $accumulatedWeight += $prize['weight'];
    if ($rand <= $accumulatedWeight) {
        $winningPrize = $prize['name'];
        break;
    }
}

echo "恭喜你获得了: " . $winningPrize;
?>