PHP限制页面只能在微信自带浏览器访问的代码

<!--?php <br ?--> $useragent = $_SERVER['HTTP_USER_AGENT'];
if (strpos($useragent, 'MicroMessenger') === false) {
echo " 非微信浏览器禁止访问";
} else {
echo "微信浏览器允许访问";
}

<!--?php <br ?--> $useragent = addslashes($_SERVER['HTTP_USER_AGENT']);
if(strpos($useragent, 'MicroMessenger') === false &amp;&amp; strpos($useragent, 'Windows Phone') === false ){
echo " 非微信浏览器禁止访问.buyerinfo.";
}else{
echo "微信浏览器允许访问.buyerinfo.";
}