<?php preg_match('/MSIE (.*?);/', $_SERVER['HTTP_USER_AGENT'], $matches); if(count($matches)<2){ preg_match('/Trident\/\d{1,2}.\d{1,2}; rv:([0-9]*)/', $_SERVER['HTTP_USER_AGENT'], $matches); } if (count($matches)>1){ //Then we're using IE $version = $matches[1]; switch(true){ case ($version<=8): echo ""; break; case ($version==9 || $version==10): echo ""; break; case ($version==11): echo ""; break; default: echo ""; } } ?>