php大坑

keng.php

<?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=%FD%##%#%E%D%D%D%D%D%D%');

// so what will this output?