wordpress如何判断用户是不是使用手机设备访问

wordpress电脑端和手机端需要分别展示内容，就需要系统能自动识别访问者是使用的电脑还是手机设备。判断用户是否使用手机设备访问，主要是获取用户的user_agent，这里包含了市面上大部分的手机浏览器的user_agent。
wordpress如何判断用户是不是使用手机设备访问

代码如下：

放到functions.php文件夹

function is_mobile() {
    $user_agent = $_SERVER['HTTP_USER_AGENT'];
    $mobile_browser = Array(
        "mqqbrowser", //手机QQ浏览器
        "opera mobi", //手机opera
        "juc","iuc",//uc浏览器
        "fennec","ios","applewebKit/420","applewebkit/525","applewebkit/532","ipad","iphone","ipaq","ipod",
        "iemobile", "windows ce",//windows phone
        "240x320","480x640","acer","android","anywhereyougo.com","asus","audio","blackberry","blazer","coolpad" ,"dopod", "etouch", "hitachi","htc","huawei", "jbrowser", "lenovo","lg","lg-","lge-","lge", "mobi","moto","nokia","phone","samsung","sony","symbian","tablet","tianyu","wap","xda","xde","zte"
    );
    $is_mobile = false;
    foreach ($mobile_browser as $device) {
        if (stristr($user_agent, $device)) {
            $is_mobile = true;
            break;
        }
    }
    return $is_mobile;}

将这段代码插入functions.php文件中，然后在你主题中需要的地方调用。

比如在index.php里调用（如果是手机用户则输入一段话）

<?php if (is_mobile() ): ?>
    //如果是手机用户，则输入一段话
    <p>如果是手机用户,我就会显示在网页中</P>
<?php endif ;?>

值得注意的是，请确保你的网站头部有这段代码

<meta name="viewport" content="width=device-width"/>

否则，手机上显示的网页，可能会出现字体太小的问题。

functions.php文件，是每个主题都必须包含的一个文件，这里面一般都是主题的各类函数集合。