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php实现随机跳转

2026-02-15 05:39:30PHP

实现随机跳转的基本方法

在PHP中实现随机跳转可以通过生成随机数或从数组中随机选择目标URL来实现。以下是一个简单的示例代码：

php实现随机跳转

$urls = [
    'https://example.com/page1',
    'https://example.com/page2',
    'https://example.com/page3'
];

$randomUrl = $urls[array_rand($urls)];
header("Location: $randomUrl");
exit;

使用数据库存储跳转目标

当需要管理的跳转目标较多时，可以从数据库中随机选择：

php实现随机跳转

// 假设已建立数据库连接
$query = "SELECT url FROM redirect_urls ORDER BY RAND() LIMIT 1";
$result = mysqli_query($connection, $query);
$row = mysqli_fetch_assoc($result);

header("Location: " . $row['url']);
exit;

加权随机跳转实现

如果需要某些URL有更高的跳转概率，可以实现加权随机算法：

$weightedUrls = [
    ['url' => 'https://example.com/page1', 'weight' => 50],
    ['url' => 'https://example.com/page2', 'weight' => 30],
    ['url' => 'https://example.com/page3', 'weight' => 20]
];

$totalWeight = array_sum(array_column($weightedUrls, 'weight'));
$random = mt_rand(1, $totalWeight);
$currentWeight = 0;

foreach ($weightedUrls as $item) {
    $currentWeight += $item['weight'];
    if ($random <= $currentWeight) {
        header("Location: " . $item['url']);
        exit;
    }
}

记录跳转统计信息

若需要记录跳转统计，可以在跳转前将信息写入数据库：

$urlId = $row['id']; // 从数据库获取的URL ID
$ip = $_SERVER['REMOTE_ADDR'];
$referrer = $_SERVER['HTTP_REFERER'] ?? '';
$timestamp = date('Y-m-d H:i:s');

$logQuery = "INSERT INTO redirect_logs (url_id, ip, referrer, timestamp) 
             VALUES ('$urlId', '$ip', '$referrer', '$timestamp')";
mysqli_query($connection, $logQuery);