<?php
$prize = ['60寸大彩電', 'iphone13', '戴森吸塵器', '索尼微單', 'VR眼鏡', '謝謝參與'];

// 當(dāng)有用戶進(jìn)來(lái)抽獎(jiǎng)，進(jìn)行隨機(jī)抽獎(jiǎng)
shuffle($prize);

// 抽獎(jiǎng)結(jié)果
print_r($prize[0]);

<?php
$prize = [
    ['name' => '60寸大彩電', 'chance' => 100],
    ['name' => 'iphone13', 'chance' => 900],
    ['name' => '戴森吸塵器', 'chance' => 1000],
    ['name' => '索尼微單', 'chance' => 2000],
    ['name' => 'VR眼鏡', 'chance' => 3000],
    ['name' => '謝謝參與', 'chance' => 3000]
];

// 概率重組
$chance = 0;
foreach ($prize as &$item) {
    $chance += $item['chance'];
    $item['chance'] = $chance;
}

// 隨機(jī)抽獎(jiǎng)
$rand = mt_rand(1, 10000);

$result = [];
foreach ($prize as $_k => $_v) {
    if ($_k == 0) {
        if ($rand > 0 && $rand <= $_v['chance']) {
            $result = $_v;
            break;
        }
    } else {
        if ($rand > $prize[$_k - 1]['chance'] && $rand <= $_v['chance']) {
            $result = $_v;
            break;
        }
    }
}

// 抽獎(jiǎng)結(jié)果
echo json_encode(compact('rand', 'result'));

<?php
$prize = [
    ['name' => '60寸大彩電', 'winners' => ['張三']],
    ['name' => 'iphone13', 'winners' => ['李四', '王五']],
    ['name' => '戴森吸塵器', 'winners' => ['亮仔']],
    ['name' => '索尼微單', 'winners' => ['李六']],
    ['name' => 'VR眼鏡', 'winners' => ['小明']]
];

// 開始抽獎(jiǎng)，這里假如亮仔過(guò)來(lái)抽
// 這里的用戶也可以是用戶唯一標(biāo)識(shí)
$user = '亮仔';

$result = '謝謝參與';
foreach ($prize as $item) {
    if (in_array($user, $item['winners'])) {
        $result = $item['name'];
        break;
    }
}

print_r('獲得的獎(jiǎng)品：' . $result);