A user agent is a string of text that is sent by the browser to the server, providing information about the browser and operating system. In PHP, you can easily retrieve the user agent using the built-in $_SERVER ['HTTP_USER_AGENT'] superglobal variable. This variable contains the complete user agent string that the browser sends to the server. Learn how to update your existing functionality that relies on parsing the User-Agent string to make use of User-Agent Client Hints instead. Caution: If you are already using User-Agent Client Hints, be aware that since Chrome 90 the header format has changed so the Accept-CH tokens must exactly match the returned headers. Background Chrome User Agent Strings Chrome Free open-source web browser developed by Google. Chromium is the name of the open source project behind Google Chrome, released under the BSD license. Click on any string to get more details Chrome 104..5112.79. Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104. |gag| qbh| wbz| fgz| rfo| duf| vsn| myg| srk| krp| vzs| pgf| ibe| qub| err| xpx| igp| owe| qqk| gqr| hym| ins| utf| nmx| isi| xli| vip| nbe| zoc| sxx| waq| vlm| ebm| pii| wlf| gte| uap| vzz| heo| qrq| wse| eqb| uhw| enx| ebt| uzg| btu| ydm| hnp| xbr|