<?php function getReferer($link) { $refMap = [ 'baidu' => '百度', 'sougou' => '搜狗', '360' => '360', 'google' => '谷歌' ]; foreach ($refMap as $key => $value) { if (strpos($link, $key) !== false) { return $value; } } return '其他'; } echo getReferer('https://www.google.com/search?workd=google');//360