Below are two scripts I'm using to test my php install. They are different from the ones I mentioned but I got them out of a book (PHP for the World Wide Web by Larry Ullman).
It looks like they should be working, but the forms page returns a blank screen. In other words, it doesn't even print the text.
FORM.PHP
<html>
<head>
<title>Feedback Form</title>
</head>
<body>
<form action="handle_form.php" METHOD="POST">
Mr. <input type="radio" name="title" value="Mr." />
Mrs. <input type="radio" name="title" value="Mrs." />
<br />
Name: <input type="text" name="name" size="20" />
<br />
</form>
</body>
</html>
handle_form.php
<html>
<head>
<title>Your Feedback</title>
</head>
<body>
<?php
ini_set('display_errors', 1);
error_reporting (E_ALL & ~ E_NOTICE);
print "Thank you {$POST['title']} {$POST['name']} for your comments. <br />
?>
</body>
</html>