Untitled

<?php

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    if (isset($_POST['surname']) && isset($_POST['name'])) {
        $name = trim($_POST['name']);
        $surname = trim($_POST['surname']);
    }
}

?>
<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport"
	      content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Zadanie 1</title>
	<!-- Latest compiled and minified CSS -->
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
</head>
<body>
<div class="container">
	<div class="row">
		<div class="col-xs-6 col-sm-6 col-md-6 col-lg-6">
            <?php

            if ($_SERVER['REQUEST_METHOD'] === 'POST') {
                echo 'Cześć witaj: ' . $name . ' ' . $surname;
            }

            ?>
		</div>
	</div>
	<div class="row">
		<div class="col-xs-6 col-sm-6 col-md-6 col-lg-6">
			<form action="index.php" method="post" role="form">
				<legend>Name and surname</legend>
				<div class="form-group">
					<label for="name">Name</label>
					<input type="text" class="form-control" name="name" id="name" placeholder="Name...">
				</div>
				<div class="form-group">
					<label for="surname">Surname</label>
					<input type="text" class="form-control" name="surname" id="surname" placeholder="Surname...">
				</div>
				<button type="submit" class="btn btn-primary">Say Hello!</button>
			</form>
		</div>
	</div>
</div>
</body>
</html>