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Two methods:

One is to judge the browser of the current request on the server side, otherwise it returns false

The second is to judge through the front-end js code

The specific code can be searched on Baidu

It's no use. Why did you mess up the layout?

<?php
/**?
*?檢測(cè)用戶當(dāng)前瀏覽器?
*?@return?boolean?是否ie瀏覽器?
*/?
function?chk_ie_browser()?{?
$userbrowser?=?$_SERVER['HTTP_USER_AGENT'];?
if?(?preg_match(?'/MSIE/i',?$userbrowser?)?)?{?
$usingie?=?true;?
}?else?{?
$usingie?=?false;?
}?
return?$usingie;?
}?
$i=chk_ie_browser();
if($i==true){
echo'你用的是IE瀏覽器！';
}else{
?echo'你用的不是IE瀏覽器！';
?}