BrowserMatch MSIE ie Header set X-UA-Compatible "IE=Edge,chrome=1" env=ie */ if(isset($_SERVER['HTTP_USER_AGENT']) && (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false)){ echo 'ie'; //header('X-UA-Compatible: IE=edge,chrome=1'); } /* c# if (Request.ServerVariables["HTTP_USER_AGENT"] != null && Request.ServerVariables["HTTP_USER_AGENT"].ToString().IndexOf("MSIE") > -1) Response.AddHeader("X-UA-Compatible", "IE=edge,chrome=1"); */ ?>