问题描述
Mobile Safari是一款功能非常强大的浏览器，它可以完美地处理我的网站。但是，我的页面上有一些元素可以针对使用此设备进行浏览进行优化;例如，提供比桌面版本更小的特定缩略图，以帮助将更多内容放入屏幕。
Mobile Safari is a very capable browser, and it can handle my website as it is perfectly. However, there are a few elements on my page that could be optimized for browsing using this device; such as serving specific thumbnails that are smaller than the desktop counterparts to help fit more content into the screen.
我想知道如何检测Mobile Safari（所有版本） ，最好）使用PHP，这样我就可以服务a）一个特定的css文件和b）不同大小的图像缩略图。
I would like to know how I can detect Mobile Safari (all versions, preferably) using PHP, so then I can serve a) a specific css file and b) different sized image thumbnails.
推荐答案
将用户代理字符串与Safari Mobile使用的字符串进行比较：
Compare the user agent string with the one of a Safari Mobile uses:
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