menu.php

<ul class="<?php echo if_or($level === 1, 'nav navbar-nav', 'dropdown-menu'); ?>">
    <?php foreach ($menu as $link): ?>

    <li class="<?php echo empty($link[ 'submenu' ]) ? '' : '​dropdown-submenu'; ?> <?php echo $link[ 'link_active' ]; ?>">
        <?php if (empty($link[ 'submenu' ])): ?>

        <a href="<?php echo $link[ 'link' ]; ?>" <?php echo if_or($link[ 'target_link' ], 'target="_blank" rel="noopener noreferrer"'); ?>>
            <?php echo if_or($link['icon'], '<i class="' . htmlspecialchars($link['icon']) . '" aria-hidden="true"></i>'); ?>

            <?php echo htmlspecialchars($link[ 'title_link' ]); ?>

        </a>
        <?php else: ?>

        <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
            <?php echo if_or($link['icon'], '<i class="' . htmlspecialchars($link['icon']) . '" aria-hidden="true"></i>'); ?>

            <?php echo htmlspecialchars($link[ 'title_link' ]); ?> <span class="caret"></span>

        </a>
        <?php echo $link[ 'submenu' ]; ?>
        <?php endif; ?>

    </li>
    <?php endforeach; ?>

</ul>