PHP isn't working on my localhost XAMPP server. I tried completely reinstalling XAMPP, leaving all options at default, and I still can't get even an "echo." I tried restarting Apache, and uninstalling/reinstalling the Apache service. I tried turning off the firewall. Nothing has worked. The code is fine, because when I uploaded it to my remote server the page worked perfectly.
Code in case it's wanted (note that it is HTML5):
<!--Main Template-->
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8" />
<title>Title</title>
<link rel="stylesheet" type="text/css" href="css/main.css" />
<script type="text/javascript" src="js/jquery.js"></script>
</head>
<body>
<div id="container">
<div id="header">
</div>
<div id="navbar">
</div>
<div id="sidebar">
</div>
<div id="content">
<?php echo "test"; ?>
</div>
<div id="footer">
</div>
</div>
</body>
</html>