Creating a PHP Program
PHP is embedded in HTML, so the procedure is the same as for creating an HTML program (see HTML Intro). The PHP code is enclosed in special start (<?php ) and end (?>) tags so you can jump into and out of "PHP mode". For example:
<html>
<head>
<title>Example PHP program</title>
</head>
<body>
<?php echo "Hello World!"; ?>
</body>
</html>