Typecho 博客文章评论添加显示 UserAgent（UA）的功能

• 本篇文章实现了为 Typecho 博客文章评论添加显示 UserAgent（UA）的功能
• 本功能可替代 UserAgent 插件，更美观、简洁且好看

效果显示

• 大概就是这样了，实际效果请看我的评论！
  
• 目前可以识别的操作系统以及浏览器
  

食用方法

• 这里以 Mirages主题为例，其他主题操作方法类似。

首先
将下面这段 css 全部加入到 Mirages/css/7.10.0/Mirages.min.css 末尾。

.ua-icon{display:inline-block;width:1pc;height:1pc;background-size:cover;background-repeat:no-repeat;vertical-align:text-top}.icon-360{background-image:url(https://img.jichun29.cn/img/20200226125429.png)}.icon-android{background-image:url(https://img.jichun29.cn/img/20200226125423.png);height:19px}.icon-apple{background-image:url(https://img.jichun29.cn/img/20200226125422.png)}.icon-baidu{background-image:url(https://img.jichun29.cn/img/20200226125424.png)}.icon-chrome{background-image:url(https://img.jichun29.cn/img/20200226125427.png)}.icon-edge{background-image:url(https://img.jichun29.cn/img/20200226125425.png)}.icon-firefox{background-image:url(https://img.jichun29.cn/img/20200226125426.png)}.icon-google{background-image:url(https://img.jichun29.cn/img/20200226125428.png)}.icon-ie{background-image:url(https://img.jichun29.cn/img/20200226125431.png)}.icon-liebao{background-image:url(https://img.jichun29.cn/img/20200226125430.png)}.icon-linux{background-image:url(https://img.jichun29.cn/img/20200226125433.png)}.icon-mac{background-image:url(https://img.jichun29.cn/img/20200226125432.png)}.icon-opera{background-image:url(https://img.jichun29.cn/img/20200226125434.png)}.icon-qq{background-image:url(https://img.jichun29.cn/img/20200226125435.png)}.icon-quark{background-image:url(https://img.jichun29.cn/img/20200226125437.png)}.icon-safari{background-image:url(https://img.jichun29.cn/img/20200226125438.png)}.icon-ubuntu{background-image:url(https://img.jichun29.cn/img/20200226125436.png)}.icon-uc{background-image:url(https://img.jichun29.cn/img/20200226125439.png)}.icon-win1{background-image:url(https://img.jichun29.cn/img/20200226125440.png)}.icon-win2{background-image:url(https://img.jichun29.cn/img/20200226125421.png)}

• 也可后台加入自定义 css 或是直接在 header.php 中引入

然后
找到 Mirages/functions.php，将下面代码完整复制，加到 functions.php 文件的最末尾

    // 获取浏览器信息
    function getBrowser($agent)
    {
        if (preg_match('/MSIE\s([^\s|;]+)/i', $agent, $regs)) {
            $outputer = '<i class="ua-icon icon-ie"></i>&nbsp;&nbsp;Internet Explore';
        } else if (preg_match('/FireFox\/([^\s]+)/i', $agent, $regs)) {
          $str1 = explode('Firefox/', $regs[0]);
    $FireFox_vern = explode('.', $str1[1]);
            $outputer = '<i class="ua-icon icon-firefox"></i>&nbsp;&nbsp;FireFox';
        } else if (preg_match('/Maxthon([\d]*)\/([^\s]+)/i', $agent, $regs)) {
          $str1 = explode('Maxthon/', $agent);
    $Maxthon_vern = explode('.', $str1[1]);
            $outputer = '<i class="ua-icon icon-edge"></i>&nbsp;&nbsp;MicroSoft Edge';
        } else if (preg_match('#360([a-zA-Z0-9.]+)#i', $agent, $regs)) {
    $outputer = '<i class="ua-icon icon-360"></i>&nbsp;&nbsp;360极速浏览器';
        } else if (preg_match('/Edge([\d]*)\/([^\s]+)/i', $agent, $regs)) {
            $str1 = explode('Edge/', $regs[0]);
    $Edge_vern = explode('.', $str1[1]);
            $outputer = '<i class="ua-icon icon-edge"></i>&nbsp;&nbsp;MicroSoft Edge';
        } else if (preg_match('/UC/i', $agent)) {
                  $str1 = explode('rowser/',  $agent);
    $UCBrowser_vern = explode('.', $str1[1]);
            $outputer = '<i class="ua-icon icon-uc"></i>&nbsp;&nbsp;UC浏览器';
        }  else if (preg_match('/QQ/i', $agent, $regs)||preg_match('/QQBrowser\/([^\s]+)/i', $agent, $regs)) {
                      $str1 = explode('rowser/',  $agent);
    $QQ_vern = explode('.', $str1[1]);
            $outputer = '<i class= "ua-icon icon-qq"></i>&nbsp;&nbsp;QQ浏览器';
        } else if (preg_match('/UBrowser/i', $agent, $regs)) {
                  $str1 = explode('rowser/',  $agent);
    $UCBrowser_vern = explode('.', $str1[1]);
            $outputer = '<i class="ua-icon icon-uc"></i>&nbsp;&nbsp;UC浏览器';
        }  else if (preg_match('/Opera[\s|\/]([^\s]+)/i', $agent, $regs)) {
            $outputer = '<i class= "ua-icon icon-opera"></i>&nbsp;&nbsp;Opera';
        } else if (preg_match('/Chrome([\d]*)\/([^\s]+)/i', $agent, $regs)) {
    $str1 = explode('Chrome/', $agent);
    $chrome_vern = explode('.', $str1[1]);
            $outputer = '<i class="ua-icon icon-chrome""></i>&nbsp;&nbsp;Google Chrome';
        } else if (preg_match('/safari\/([^\s]+)/i', $agent, $regs)) {
             $str1 = explode('Version/',  $agent);
    $safari_vern = explode('.', $str1[1]);
            $outputer = '<i class="ua-icon icon-safari"></i>&nbsp;&nbsp;Safari';
        } else{
            $outputer = '<i class="ua-icon icon-chrome"></i>&nbsp;&nbsp;Google Chrome';
        }
        echo $outputer;
    }
    // 获取操作系统信息
    function getOs($agent)
    {
        $os = false;

        if (preg_match('/win/i', $agent)) {
            if (preg_match('/nt 6.0/i', $agent)) {
                $os = '&nbsp;&nbsp;<i class= "ua-icon icon-win1"></i>&nbsp;&nbsp;Windows Vista&nbsp;/&nbsp;';
            } else if (preg_match('/nt 6.1/i', $agent)) {
                $os = '&nbsp;&nbsp;<i class= "ua-icon icon-win1"></i>&nbsp;&nbsp;Windows 7&nbsp;/&nbsp;';
            } else if (preg_match('/nt 6.2/i', $agent)) {
                $os = '&nbsp;&nbsp;<i class="ua-icon icon-win2"></i>&nbsp;&nbsp;Windows 8&nbsp;/&nbsp;';
            } else if(preg_match('/nt 6.3/i', $agent)) {
                $os = '&nbsp;&nbsp;<i class= "ua-icon icon-win2"></i>&nbsp;&nbsp;Windows 8.1&nbsp;/&nbsp;';
            } else if(preg_match('/nt 5.1/i', $agent)) {
                $os = '&nbsp;&nbsp;<i class="ua-icon icon-win1"></i>&nbsp;&nbsp;Windows XP&nbsp;/&nbsp;';
            } else if (preg_match('/nt 10.0/i', $agent)) {
                $os = '&nbsp;&nbsp;<i class="ua-icon icon-win2"></i>&nbsp;&nbsp;Windows 10&nbsp;/&nbsp;';
            } else{
                $os = '&nbsp;&nbsp;<i class="ua-icon icon-win2"></i>&nbsp;&nbsp;Windows X64&nbsp;/&nbsp;';
            }
        } else if (preg_match('/android/i', $agent)) {
        if (preg_match('/android 9/i', $agent)) {
                $os = '&nbsp;&nbsp;<i class="ua-icon icon-android"></i>&nbsp;&nbsp;Android Pie&nbsp;/&nbsp;';
            }
        else if (preg_match('/android 8/i', $agent)) {
                $os = '&nbsp;&nbsp;<i class="ua-icon icon-android"></i>&nbsp;&nbsp;Android Oreo&nbsp;/&nbsp;';
            }
        else{
                $os = '&nbsp;&nbsp;<i class="ua-icon icon-android"></i>&nbsp;&nbsp;Android&nbsp;/&nbsp;';
        }
        }
        else if (preg_match('/ubuntu/i', $agent)) {
            $os = '&nbsp;&nbsp;<i class="ua-icon icon-ubuntu"></i>&nbsp;&nbsp;Ubuntu&nbsp;/&nbsp;';
        } else if (preg_match('/linux/i', $agent)) {
            $os = '&nbsp;&nbsp;<i class= "ua-icon icon-linux"></i>&nbsp;&nbsp;Linux&nbsp;/&nbsp;';
        } else if (preg_match('/iPhone/i', $agent)) {
            $os = '&nbsp;&nbsp;<i class="ua-icon icon-apple"></i>&nbsp;&nbsp;iPhone&nbsp;/&nbsp;';
        } else if (preg_match('/mac/i', $agent)) {
            $os = '&nbsp;&nbsp;<i class="ua-icon icon-mac"></i>&nbsp;&nbsp;MacOS&nbsp;/&nbsp;';
        }else if (preg_match('/fusion/i', $agent)) {
            $os = '&nbsp;&nbsp;<i class="ua-icon icon-android"></i>&nbsp;&nbsp;Android&nbsp;/&nbsp;';
        } else {
            $os = '&nbsp;&nbsp;<i class="ua-icon icon-linux"></i>&nbsp;&nbsp;Linux&nbsp;/&nbsp;';
        }
        echo $os;
    }

最后

在 Mirages/lib/comments.php 中找到合适位置添加以下代码：

<span class="comment-ua">
    <?php getOs($comments->agent); ?>
    <?php getBrowser($comments->agent); ?></span>

如果修改完都显示 Linux 的话，需要将上面的 $comments 替换成 $this 即可，注意代码缩进
修改完后刷新浏览器缓存，现在你的评论 UA 已经变得很漂亮啦！