<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>PHP</title>
</head>
<body>
<h1>PHP nej</h1>
<?php
$x = 1;
$y = 2;
$sum = $x + $y;
echo "<p>$x + $y = $sum</p>";
?>
</body>
</html>
