php in html
Basic PHP Syntax
A PHP script can be placed anywhere in the document.
A PHP script starts with <?php and ends with ?>:
<?php
// PHP code goes here
?>
The default file extension for PHP files is ".php".
A PHP file normally contains HTML tags, and some PHP scripting code.
Example
<!DOCTYPE html>
<html>
<body>
<h1>Php in html</h1>
<?php
echo "Hello World!";
?>
</body>
</html>