Different Code for Different Browsers
PHP
<?php
$msie = strpos($_SERVER["HTTP_USER_AGENT"], 'MSIE') ? true : false;
$firefox = strpos($_SERVER["HTTP_USER_AGENT"], 'Firefox') ? true : false;
$safari = strpos($_SERVER["HTTP_USER_AGENT"], 'Safari') ? true : false;
$chrome = strpos($_SERVER["HTTP_USER_AGENT"], 'Chrome') ? true : false;
?>
<?php
//Firefox
if ($firefox) { ?>
<!-- Your HTML goes Here -->
<h1>You are using Firefox</h1>
<?php } ?>
<?php
// Safari or Chrome. Both use the same engine - webkit
if ($safari || $chrome) { ?>
<!-- Your HTML goes Here -->
<h1>You are using a webkit powered browser</h1>
<?php } ?>
<?php
// IE
if ($msie) { ?>
<!-- Your HTML goes Here -->
<h1>You are using IE</h1>
<?php } ?>
<?php
// Not IE and for all other browsers
if (!$msie) { ?>
<!-- Your HTML goes Here -->
<h1>You are not using IE</h1>
<?php } ?>