将下面的样式表外链加入到header.php的head部分

UA图标下载:https://bsblog.lanzous.com/iIgPuogw52j

CSS样式

.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://youdomain.com)
}
.icon-android {
background-image: url(https://youdomain.com);
height: 19px
}
.icon-apple {
background-image: url(https://youdomain.com)
}
.icon-baidu {
background-image: url(https://youdomain.com)
}
.icon-chrome {
background-image: url(https://youdomain.com)
}
.icon-edge {
background-image: url(https://youdomain.com)
}
.icon-firefox {
background-image: url(https://youdomain.com)
}
.icon-google {
background-image: url(https://youdomain.com)
}
.icon-ie {
background-image: url(https://youdomain.com)
}
.icon-liebao {
background-image: url(https://youdomain.com)
}
.icon-linux {
background-image: url(https://youdomain.com)
}
.icon-mac {
background-image: url(https://youdomain.com)
}
.icon-opera {
background-image: url(https://youdomain.com)
}
.icon-qq {
background-image: url(https://youdomain.com)
}
.icon-quark {
background-image: url(https://youdomain.com)
}
.icon-safari {
background-image: url(https://youdomain.com)
}
.icon-ubuntu {
background-image: url(https://youdomain.com)
}
.icon-uc {
background-image: url(https://youdomain.com)
}
.icon-win1 {
background-image: url(https://youdomain.com)
}
.icon-win2 {
background-image: url(https://youdomain.com)
}

将以下代码加入到function.php

// 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;
}

将以下代码添加到comments.php中122行所在的div中

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