HTML
<html>
<head></head>
<body>
Hello World!
This is <b>bold</b>.
<a href="http://www.faecbook.com">www.facebook.com</a>
<img src="https://www.haskell.org/happy/Happy.gif" />
</body>
</html>
JavaScript
<html
<head></head>
<body>
<script>
document.write(1+2);
</script>
</body>
</html>
PHP
GET Request
<?php
echo "Hello,".$_GET["name"];
?>
POST Request
<form action="" method="post">
Username <input type="text" name="username" />
<input type="submit" />
</form>
<?php
echo "Hello,".$_POST["username"];
?>
