直接上代码

<?php
    // 获取用户操作系统类型
    function get_user_os($osstr = null) {
        if (isset($_SERVER["HTTP_USER_AGENT"])) {
            $user_agent = strtolower($_SERVER["HTTP_USER_AGENT"]);
        } else {
            return null;
        }
        
        // 直接检测传递的值
        if ($osstr) {
            if (strpos($user_agent, strtolower($osstr))) {
                return true;
            } else {
                return false;
            }
        }
        
        if (strpos($user_agent, 'windows nt 5.0')) {
            $user_os = 'Windows 2000';
        } elseif (strpos($user_agent, 'windows nt 9')) {
            $user_os = 'Windows 9X';
        } elseif (strpos($user_agent, 'windows nt 5.1')) {
            $user_os = 'Windows XP';
        } elseif (strpos($user_agent, 'windows nt 5.2')) {
            $user_os = 'Windows 2003';
        } elseif (strpos($user_agent, 'windows nt 6.0')) {
            $user_os = 'Windows Vista';
        } elseif (strpos($user_agent, 'windows nt 6.1')) {
            $user_os = 'Windows 7';
        } elseif (strpos($user_agent, 'windows nt 6.2')) {
            $user_os = 'Windows 8';
        } elseif (strpos($user_agent, 'windows nt 6.3')) {
            $user_os = 'Windows 8.1';
        } elseif (strpos($user_agent, 'windows nt 10')) {
            $user_os = 'Windows 10';
        } elseif (strpos($user_agent, 'windows phone')) {
            $user_os = 'Windows Phone';
        } elseif (strpos($user_agent, 'android')) {
            $user_os = 'Android';
        } elseif (strpos($user_agent, 'iphone')) {
            $user_os = 'iPhone';
        } elseif (strpos($user_agent, 'ipad')) {
            $user_os = 'iPad';
        } elseif (strpos($user_agent, 'mac')) {
            $user_os = 'Mac';
        } elseif (strpos($user_agent, 'sunos')) {
            $user_os = 'Sun OS';
        } elseif (strpos($user_agent, 'bsd')) {
            $user_os = 'BSD';
        } elseif (strpos($user_agent, 'ubuntu')) {
            $user_os = 'Ubuntu';
        } elseif (strpos($user_agent, 'linux')) {
            $user_os = 'Linux';
        } elseif (strpos($user_agent, 'unix')) {
            $user_os = 'Unix';
        } else {
            $user_os = 'Other';
        }
        return $user_os;
    }
    
    // 综合判断是否移动终端
    function isMobile()
    {
        $os = get_user_os();
        if ($os == 'Android' || $os == 'iPhone' || $os == 'Windows Phone' || $os == 'iPad') {
            return true;
        } elseif (isset($_SERVER['HTTP_VIA']) && stristr($_SERVER['HTTP_VIA'], "wap")) {
            return true;
        } elseif (isset($_SERVER['HTTP_ACCEPT']) && strpos(strtoupper($_SERVER['HTTP_ACCEPT']), "VND.WAP.WML")) {
            return true;
        } elseif (isset($_SERVER['HTTP_X_WAP_PROFILE']) || isset($_SERVER['HTTP_PROFILE'])) {
            return true;
        } elseif (isset($_SERVER['HTTP_USER_AGENT']) && preg_match('/(blackberry|configuration\/cldc|hp |hp-|htc |htc_|htc-|iemobile|kindle|midp|mmp|motorola|mobile|nokia|opera mini|opera |Googlebot-Mobile|YahooSeeker\/M1A1-R2D2|android|iphone|ipod|mobi|palm|palmos|pocket|portalmmm|ppc;|smartphone|sonyericsson|sqh|spv|symbian|treo|up.browser|up.link|vodafone|windows ce|xda |xda_)/i',$_SERVER['HTTP_USER_AGENT'])) {
            return true;
        } else {
            return false;
        }
    }
?>
<div><?php $c=isMobile()?('T'):('F');echo $c?></div>