如何在PHP中删除链接中的跟踪代码

function removeTrackingCode($url) {
    $parsedUrl = parse_url($url);
    
    if (isset($parsedUrl['query'])) {
        parse_str($parsedUrl['query'], $queryParams);
        
        // 删除跟踪代码相关的键值对
        $trackingCodes = ['utm_source', 'utm_medium', 'utm_campaign'];
        foreach ($trackingCodes as $code) {
            if (isset($queryParams[$code])) {
                unset($queryParams[$code]);
            }
        }
        
        // 重新构建查询参数字符串
        $newQuery = http_build_query($queryParams);
        
        // 重建URL
        $newUrl = $parsedUrl['scheme'] . '://' . $parsedUrl['host'] . $parsedUrl['path'];
        if (!empty($newQuery)) {
            $newUrl .= '?' . $newQuery;
        }
        
        return $newUrl;
    }
    
    return $url;
}

// 示例用法
$url = 'https://example.com/page?utm_source=google&utm_medium=cpc&utm_campaign=summer_sale';
$newUrl = removeTrackingCode($url);
echo $newUrl;

https://example.com/page