<div class="row panel panel-default" style="margin-top: 10px"> <!-- Default panel contents --> <div class="panel-heading">Lifeguard</div> <div class="col-lg-12 "> <p><?php echo $root->first_name; ?> </p> <ul class="tree"> <?php foreach ($level1 as $user1) { $u = new User(); $str_ul = $u->getUserReferrer($user1->code); if ($str_ul == "NULL") { ?> <li><i class="glyphicon glyphicon-minus"></i> <input type="checkbox" value="<?php echo $user1->id; ?> " /> <a id="<?php echo $user1->code; ?> " class="node node_null minus" href="#"><?php echo $user1->first_name . " " . $user1->last_name; ?> </a>