SWDB/application/view/inc/header_app.php

<?php
    /**
     * Site header view.
     *
     * To be included from all views.
     *
     * @category View
     */

    if ($_SESSION['session'] == true && get_context()->get_user() != null){
        $logged_in = true;
        //$user_id = get_context()->get_user()->get_id();
    }
    else{
        $logged_in = false;
        //$user_id = null;
    }
?>
<script>
    function setSearchAction(){
        var query = document.getElementById('app_search_query').value;
        document.getElementById('app_search_form').action = '/search/' + query;
    }
</script>
<nav class='menu' id='menu_app'>
    <table>
        <tr>
            <td>
                <h1 id='logo_text'>
                    SWDB
                </h1>
            </td>
            <td class='item'>
                <a href='/monsters/'>
                    Monsters
                </a>
            </td>
            <td class='item'>
                <a href='/dungeons/'>
                    Dungeons
                </a>
            </td>
            <td class='item'>
                <a href='/buildings/'>
                    Buildings
                </a>
            </td>
            <td class='item'>
                <a href='/fusion/'>
                    Fusion
                </a>
            </td>
<?php
                if (! $logged_in){
?>
                <td class='item'>
                    <a href='/login/'>
                        Login
                    </a>
                </td>
                <td class='item'>
                    <a href='/register/'>
                        Register
                    </a>
                </td>
<?php
                }
                else{
?>
                    <td class='item'>
                        <a href='/'>
                            Account
                        </a>
                    </td>
                    <td class='item'>
                        <a href='/action/logout/'>
                            Log Out
                        </a>
                    </td>
<?php
                }
?>
           <td class='item' id='search'>
                <form id='app_search_form' onsubmit='setSearchAction();'>
                    <input id='app_search_query' type='text' placeholder='Search...'/>
                    <input type='submit' value='Search'/>
                </form>
            </td>
        </tr>
    </table>
</nav>