simple_form.php:
<html>
<head>
<title>PHP Form</title>
</head>
<body>
<?php
if array_key_exists('my_name',$_GET)
{
print "Hi ".$_GET['my_name'];
print "You are ".$_GET['my_age']." years old.";
}
{
print<<< _HTML_
<form method="get" action="$_SERVER[PHP_SELF]">
<p>Your name: <input type="text" name="my_name" /></p>
<p>Your age: <input type="text" name="my_age" /></p>
<p><input type="submit" /></p>
</form>
_HTML_;
}
?>
</body>
</html>