WordPress UserAgent代码版

非插件实现显示评论者所用的浏览器和操作系统类型。该精简版原作者为MUFENG

将UserAgent集成到你的主题中。下面是极简无图版介绍：
首先将下面的get_useragent()函数代码加入到functions.php模板中

<?php
function get_browsers($ua){
    $title = 'unknow';
    $icon = 'unknow';    
    if (preg_match('#MSIE ([a-zA-Z0-9.]+)#i', $ua, $matches)) {
        $title = 'Internet Explorer '. $matches[1];
        if ( strpos($matches[1], '7') !== false || strpos($matches[1], '8') !== false)
            $icon = 'ie8';
        elseif ( strpos($matches[1], '9') !== false)
            $icon = 'ie9';
        elseif ( strpos($matches[1], '10') !== false)
            $icon = 'ie10';
        else
            $icon = 'ie';
    }elseif (preg_match('#Firefox/([a-zA-Z0-9.]+)#i', $ua, $matches)){
        $title = 'Firefox '. $matches[1];
        $icon = 'firefox';
    }elseif (preg_match('#CriOS/([a-zA-Z0-9.]+)#i', $ua, $matches)){
        $title = 'Chrome for iOS '. $matches[1];
        $icon = 'crios';
    }elseif (preg_match('#Chrome/([a-zA-Z0-9.]+)#i', $ua, $matches)) {
        $title = 'Google Chrome '. $matches[1];
        $icon = 'chrome';
        if (preg_match('#OPR/([a-zA-Z0-9.]+)#i', $ua, $matches)) {
            $title = 'Opera '. $matches[1];
            $icon = 'opera15';
            if (preg_match('#opera mini#i', $ua)) $title = 'Opera Mini'. $matches[1];
        }
    }elseif (preg_match('#Safari/([a-zA-Z0-9.]+)#i', $ua, $matches)) {
        $title = 'Safari '. $matches[1];
        $icon = 'safari';
    }elseif (preg_match('#Opera.(.*)Version[ /]([a-zA-Z0-9.]+)#i', $ua, $matches)) {
        $title = 'Opera '. $matches[2];
        $icon = 'opera';
        if (preg_match('#opera mini#i', $ua)) $title = 'Opera Mini'. $matches[2];        
    }elseif (preg_match('#Maxthon( |/)([a-zA-Z0-9.]+)#i', $ua,$matches)) {
        $title = 'Maxthon '. $matches[2];
        $icon = 'maxthon';
    }elseif (preg_match('#360([a-zA-Z0-9.]+)#i', $ua, $matches)) {
        $title = '360 Browser '. $matches[1];
        $icon = '360se';
    }elseif (preg_match('#SE 2([a-zA-Z0-9.]+)#i', $ua, $matches)) {
        $title = 'SouGou Browser 2'.$matches[1];
        $icon = 'sogou';
    }elseif (preg_match('#UCWEB([a-zA-Z0-9.]+)#i', $ua, $matches)) {
        $title = 'UCWEB '. $matches[1];
        $icon = 'ucweb';
    }elseif(preg_match('#wp-(iphone|android)/([a-zA-Z0-9.]+)#i', $ua, $matches)){ // 1.2 增加 wordpress 客户端的判断
        $title = 'wordpress '. $matches[2];
        $icon = 'wordpress';
    }
    
    return array(
        $title,
        $icon
    );
}
function get_os($ua){
    $title = 'unknow';
    $icon = 'unknow';
    if (preg_match('/win/i', $ua)) {
        if (preg_match('/Windows NT 6.1/i', $ua)) {
            $title = "Windows 7";
            $icon = "windows_win7";
        }elseif (preg_match('/Windows NT 5.1/i', $ua)) {
            $title = "Windows XP";
            $icon = "windows";
        }elseif (preg_match('/Windows NT 6.2/i', $ua)) {
            $title = "Windows 8";
            $icon = "windows_win8";
        }elseif (preg_match('/Windows NT 6.3/i', $ua)) {
            $title = "Windows 8.1";
            $icon = "windows_win8";
        }elseif (preg_match('/Windows NT 6.0/i', $ua)) {
            $title = "Windows Vista";
            $icon = "windows_vista";
        }elseif (preg_match('/Windows NT 5.2/i', $ua)) {
            if (preg_match('/Win64/i', $ua)) {
                $title = "Windows XP 64 bit";
            } else {
                $title = "Windows Server 2003";
            }
            $icon = 'windows';
        }elseif (preg_match('/Windows Phone/i', $ua)) {
            $matches = explode(';',$ua);
            $title = $matches[2];
            $icon = "windows_phone";
        }
    }elseif (preg_match('#iPod.*.CPU.([a-zA-Z0-9.( _)]+)#i', $ua, $matches)) {
        $title = "iPod ".$matches[1];
        $icon = "iphone";
    } elseif (preg_match('#iPhone OS ([a-zA-Z0-9.( _)]+)#i', $ua, $matches)) {// 1.2 修改成 iphone os 来判断 
        $title = "Iphone ".$matches[1];
        $icon = "iphone";
    } elseif (preg_match('#iPad.*.CPU.([a-zA-Z0-9.( _)]+)#i', $ua, $matches)) {
        $title = "iPad ".$matches[1];
        $icon = "ipad";
    } elseif (preg_match('/Mac OS X.([0-9. _]+)/i', $ua, $matches)) {
        if(count(explode(7,$matches[1]))>1) $matches[1] = 'Lion '.$matches[1];
        elseif(count(explode(8,$matches[1]))>1) $matches[1] = 'Mountain Lion '.$matches[1];
        $title = "Mac OSX ".$matches[1];
        $icon = "macos";
    } elseif (preg_match('/Macintosh/i', $ua)) {
        $title = "Mac OS";
        $icon = "macos";
    } elseif (preg_match('/CrOS/i', $ua)){
        $title = "Google Chrome OS";
        $icon = "chrome";
    }elseif (preg_match('/Linux/i', $ua)) {
        $title = 'Linux';
        $icon = 'linux';
        if (preg_match('/Android.([0-9. _]+)/i',$ua, $matches)) {
            $title= $matches[0];
            $icon = "android";
        }elseif (preg_match('#Ubuntu#i', $ua)) {
            $title = "Ubuntu Linux";
            $icon = "ubuntu";
        }elseif(preg_match('#Debian#i', $ua)) {
            $title = "Debian GNU/Linux";
            $icon = "debian";
        }elseif (preg_match('#Fedora#i', $ua)) {
            $title = "Fedora Linux";
            $icon = "fedora";
        }
    }
    return array(
        $title,
        $icon
    );
}
function get_useragent($ua){
    $url = get_bloginfo('template_directory') . '/images/browsers/';
    $browser = get_browsers($ua);
    $os = get_os($ua);
    echo '<span class="useragent tra">｜<span class="fa fa-globe"></span> '.$browser[0].'｜<span class="fa fa-desktop"></span> '.$os[0].'</span>';
    //echo '<img src="'.$url.$browser[1].'.png" title="'.$browser[0].'" style="border:0px;vertical-align:middle;" alt="'.$browser[0].'"><img src="'.$url.$os[1].'.png" title="'.$os[0].'" style="border:0px;vertical-align:middle;" alt="'.$os[0].'">';
}

最后本人注释掉了原带图的代码，替换为无图模式，用到Font Awesome字体图标，可以自行添加自己想要的图标。

引用的代码为：

<?php get_useragent($comment->comment_agent);?>

将该函数插入到评论列表的相应位置显示即可。