用户代理，从字符串中提取操作系统和浏览器

User agent, extract OS and browser from string(用户代理，从字符串中提取操作系统和浏览器)

问题描述

我想从用户代理字符串中提取完整的操作系统名称和浏览器.我该怎么做?

I'd like to extract full the OS name and browser from the user agent string. How can I do this?

推荐答案

我认为获取完整的操作系统名称和完整的浏览器名称很棘手，因为许多浏览器以不同的方式标识自己.您可能需要一些花哨的正则表达式，然后它甚至可能无法 100% 工作.

I think it is tricky to get the full OS name and full browser name since many browsers identify themselves differently. You will probably need some fancy regex and then it might not even work 100% of the time.

这是我用来识别浏览器的简单方法.您可以根据自己的需要对其进行调整.

Here is the simple method I use to identify the browser. You may be able to adapt it to suit your needs.

<?php

public static function getUserAgent()
{
    static $agent = null;

    if ( empty($agent) ) {
        $agent = $_SERVER['HTTP_USER_AGENT'];

        if ( stripos($agent, 'Firefox') !== false ) {
            $agent = 'firefox';
        } elseif ( stripos($agent, 'MSIE') !== false ) {
            $agent = 'ie';
        } elseif ( stripos($agent, 'iPad') !== false ) {
            $agent = 'ipad';
        } elseif ( stripos($agent, 'Android') !== false ) {
            $agent = 'android';
        } elseif ( stripos($agent, 'Chrome') !== false ) {
            $agent = 'chrome';
        } elseif ( stripos($agent, 'Safari') !== false ) {
            $agent = 'safari';
        } elseif ( stripos($agent, 'AIR') !== false ) {
            $agent = 'air';
        } elseif ( stripos($agent, 'Fluid') !== false ) {
            $agent = 'fluid';
        }

    }

    return $agent;
}

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