Question

之前我没有使用过$_SERVER['HTTP_REFERER']，我也不知道如何通过点击Google搜索结果中的链接来查找该用户来到我的网站。用户可以来自google.com，google.co.uk等....

非常感谢。

Answer 1

$url = $_SERVER['HTTP_REFERER'];
$query = parse_url ($url, PHP_URL_QUERY);
$host = parse_url ($url, PHP_URL_HOST);
if (strstr ($query, 'q=') && strstr ($host, 'google.')) {
    // user came from google
else {
    // user didnt come from google
}

Answer 2

我的解决方案在页面请求中不存在引荐来源时不会发出任何警告。

public function doesUserCameFromCrawler() {
    $crawlerList=array("google.","yandex.","bing.");

    if (isset($_SERVER['HTTP_REFERER'])) {
        $referringPage = parse_url( $_SERVER['HTTP_REFERER'] );
        if ( isset( $referringPage['host'] )) {
            $referringHost = $referringPage['host'];
            foreach ($crawlerList as $crawler) {
                if (strpos(strtolower($referringHost),$crawler) !== FALSE) {
                    return TRUE;
                }
            }
        }
    }
    return FALSE;
}

如何使用$ _SERVER ['HTTP_REFERER']查找该用户来自谷歌？

2 个答案: