Displaying icons using php IF

Just wondering, I'm creating a multi-vendor website. So far it has all been going well, however we have a need to display icons as badges if a field contains data.

Here is an example of the code:

<li class="location clearfix">
        <div class="pull-left">
            <span><i class="fa fa-briefcase"></i><?php _e('abn ',) ?></span>
        </div>
        <div class="pull-right">
            <?php echo $abn; ?>
        </div>
    </li>

When displaying the field abn it appears fine, although we are wanting an icon displayed if abn contains data. We are needing the Echo to be an IF statement, that if the profile ``abn``` field contains data, that an icon is displayed.

Just wondering, is there any examples that anyone would have using an existing script?

Thanks for helping!