itflow/includes/top_nav.php

<!-- Navbar -->
<nav class="main-header navbar navbar-expand navbar-<?= escapeHtml($config_theme) ?> navbar-dark">

    <!-- Left navbar links -->
    <ul class="navbar-nav">
        <li class="nav-item">
            <a class="nav-link" data-widget="pushmenu" data-enable-remember="TRUE" href="#"><i class="fas fa-bars"></i></a>
        </li>
    </ul>

    <!-- Center navbar links -->
    <ul class="navbar-nav ml-auto">

        <!-- SEARCH FORM -->
        <form class="form-inline" action="/agent/global_search.php">
            <div class="input-group input-group-sm">
                <input class="form-control form-control-navbar" type="search" placeholder="Search everywhere" name="query"
                    value="<?php if (isset($_GET['query'])) { echo escapeHtml($_GET['query']); } ?>">
                <div class="input-group-append">
                    <button class="btn btn-navbar" type="submit">
                        <i class="fas fa-search"></i>
                    </button>
                </div>
            </div>
        </form>
    </ul>

    <!-- Right navbar links -->
    <ul class="navbar-nav ml-auto">

        <!--Custom Nav Link -->
        <?php
        $sql_custom_links = mysqli_query($mysqli, "SELECT * FROM custom_links WHERE custom_link_location = 2 AND custom_link_archived_at IS NULL
            ORDER BY custom_link_order ASC, custom_link_name ASC"
        );

        while ($row = mysqli_fetch_assoc($sql_custom_links)) {
            $custom_link_name = escapeHtml($row['custom_link_name']);
            $custom_link_uri = escapeUrl($row['custom_link_uri']);
            $custom_link_icon = escapeHtml($row['custom_link_icon']);
            $custom_link_new_tab = intval($row['custom_link_new_tab']);
            if ($custom_link_new_tab == 1) {
                $target = "target='_blank' rel='noopener noreferrer'";
            } else {
                $target = "";
            }

            ?>

        <li class="nav-item" title="<?= $custom_link_name ?>">
            <a href="<?= $custom_link_uri ?>" <?= $target ?> class="nav-link">
                <i class="fas fa-<?= $custom_link_icon ?> nav-icon"></i>
            </a>
        </li>

        <?php } ?>
        <!-- End Custom Nav Links -->

        <!-- New Notifications Dropdown -->
        <?php
        $row = mysqli_fetch_assoc(mysqli_query($mysqli, "SELECT COUNT('notification_id') AS num FROM notifications WHERE notification_user_id = $session_user_id AND notification_dismissed_at IS NULL"));
        $num_notifications = $row['num'];

        ?>

        <li class="nav-item">
            <a class="nav-link ajax-modal" href="#" data-modal-url="/modals/notifications.php">
                <i class="fas fa-bell"></i>
                <?php if ($num_notifications) { ?>
                <span class="badge badge-light badge-pill navbar-badge position-absolute" style="top: 1px; right: 3px;">
                    <?= $num_notifications ?>
                </span>
                <?php } ?>
            </a>
        </li>

        <li class="nav-item dropdown user-menu">
            <a href="#" class="nav-link" data-toggle="dropdown">
                <?php if (empty($session_avatar)) { ?>
                <i class="fas fa-user-circle mr-1"></i>
                <?php }else{ ?>
                <img src="<?= "/uploads/users/$session_user_id/$session_avatar" ?>"
                    class="user-image img-circle">
                <?php } ?>
                <span
                    class="d-none d-md-inline dropdown-toggle"><?= stripslashes(escapeHtml($session_name)) ?></span>
            </a>
            <ul class="dropdown-menu dropdown-menu-lg dropdown-menu-right">
                <!-- User image -->
                <li class="user-header bg-gray-dark">
                    <?php if (empty($session_avatar)) { ?>
                    <i class="fas fa-user-circle fa-6x"></i>
                    <?php }else{ ?>

                    <img src="<?= "/uploads/users/$session_user_id/$session_avatar" ?>" class="img-circle">
                    <?php } ?>
                    <p>
                        <?= stripslashes(escapeHtml($session_name)) ?>
                        <small><?= escapeHtml($session_user_role_display) ?></small>
                    </p>
                </li>
                <!-- Menu Footer-->
                <li class="user-footer">
                    <?php if ($session_is_admin) { ?>
                        <a href="/admin" class="btn btn-default btn-block btn-flat mb-2"><i class="fas fa-user-shield mr-2"></i>Administration</a>
                    <?php } ?>
                    <a href="/agent/user/user_details.php" class="btn btn-default btn-flat"><i class="fas fa-user-cog mr-2"></i>Account</a>
                    <a href="/agent/post.php?logout" class="btn btn-default btn-flat float-right"><i class="fas fa-sign-out-alt mr-2"></i>Logout</a>
                </li>
            </ul>
        </li>

    </ul>
</nav>
<!-- /.navbar -->