PHP development to determine WeChat browser access

<?php

/** 
 * ======================================= 
 * Created by ZHIHUA·WEI. 
 * Author: ZHIHUA·WEI 
 * Date: 2018/4/10 
 * Time: 09:20 
 * Project: PHP开发小技巧 
 * Power: 判断是否微信访问
 * ======================================= 
 */  

/**
 * 判断是否微信访问
 * @return bool
 */
function is_weixin_visit()
{
    if (strpos($_SERVER[&#39;HTTP_USER_AGENT&#39;], &#39;MicroMessenger&#39;) !== false) {
        return true;
    } else {
        return false;
    }
}


if(is_weixin_visit()){
	echo "微信访问！";
}else{
	echo "other";
}

function is_weixin() { 
    var ua = window.navigator.userAgent.toLowerCase(); 
    if (ua.match(/MicroMessenger/i) == 'micromessenger') { 
        console.log("微信浏览器"); 
    } else { 
        console.log("不是微信浏览器"); 
    } 
}