<?php
    $filename = basename($_SERVER["PHP_SELF"]);
?>

<!-- Fixed navbar -->
<nav class="navbar navbar-inverse navbar-fixed-top">
    <div class="container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="index.php">David Dernovoj</a>
        </div>
        <div id="navbar" class="navbar-collapse collapse">
            <ul class="nav navbar-nav">
                <?php
                if($filename == 'index.php'){
                    echo '<li class="active"><a href="index.php">Home</a></li>';
                }
                else{
                    echo '<li ><a href="index.php">Home</a></li>';
                }

                if ($filename == 'about.php'){
                    echo '<li class="active"><a href="about.php">About</a></li>';
                }
                else{
                    echo '<li><a href="about.php">About</a></li>';
                }

                if ($filename=='finished.php'){
                    echo '<li class="active"><a href="finished.php">Finished projects</a></li>';
                }
                else{
                    echo '<li><a href="finished.php">Finished projects</a></li>';
                }

                if($filename == 'contact.php') {
                    echo '<li class="active"><a href="contact.php">Contact</a></li>';
                }
                else{
                    echo '<li><a href="contact.php">Contact</a></li>';
                }
                ?>
            </ul>
        </div>
    </div>
</nav>