web开发判断移动端

我们在制作响应式主题时会根据不同的设备推送不同的内容，这样有效的避免了移动设备对主机带宽压力，在需要什么样的内容接受什么的样式及内容。
前言(head部分添加):

直接贴代码：

/**
*
*手机移动设备识别函数
*
**/
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;
}

以上代码直接写到functions.php

//显示手机移动端内容

//非手机移动端内容