php 抽奖源码

<?php
// 假设有一个用户数组，每个用户有一个唯一的ID和积分
$users = [
    ['id' => 1, 'points' => 100],
    ['id' => 2, 'points' => 200],
    ['id' => 3, 'points' => 300],
];

// 计算总积分
$totalPoints = array_sum(array_column($users, 'points'));

// 生成一个随机数，范围在0到总积分之间
$randomNumber = mt_rand(0, $totalPoints);

// 根据随机数确定中奖用户
$winningUser = null;
$accumulatedPoints = 0;
foreach ($users as $user) {
    $accumulatedPoints += $user['points'];
    if ($randomNumber <= $accumulatedPoints) {
        $winningUser = $user['id'];
        break;
    }
}

echo "中奖用户ID: " . $winningUser;
?>