<?php
$cam = $db->prepare('select * from camere');
$cam->execute();

while ($cams = $cam->fetch(PDO::FETCH_OBJ)) {?>
  <ul class="list" style="list-style: none;">
    <div class="panel panel-primary">
      <div class="panel-heading">
        <li><h3 class="panel-title"><?php $cam_loc = $cams->locatie; ?><?php echo $cam_loc;?></h3> </li>
      </div>

      <div class="panel-body">
        <div class="row">
          <div class="col-md-2" align="center">
            <div class="list-group">
              <a class="list-group-item">Model: <strong><?php echo $cams->model; ?></strong></a>
              <a class="list-group-item">Ip Intern: <strong><?php echo $cams->ip_int; ?></strong></a>
              <a class="list-group-item">Ip Extern: <strong><?php echo $cams->ip_ext; ?></strong></a>
              <a class="list-group-item">Port: <strong><?php echo $cams->port; ?></strong></a>
              <a class="list-group-item">User: <strong><?php echo $cams->user; ?></strong></a>
              <a class="list-group-item">Pass: <strong><?php echo $cams->pass; ?></strong></a>
            </div>
          </div>
        </div>
      </div>
    </div>
  </ul>
<?php } ?>

<?php
$cam = $db->prepare('select * from camere');
$cam->execute();

$heading = "";

while ($cams = $cam->fetch(PDO::FETCH_OBJ)) {?>
  <ul class="list" style="list-style: none;">
    <div class="panel panel-primary">

      <?php $cam_loc = $cams->locatie;

      if ($heading != $cam_loc) { ?>

      <div class="panel-heading">
        <li><h3 class="panel-title"><?php echo $cam_loc; ?></h3> </li>
      </div>

      <?php }
          //Update $heading ready for the next row.
          $heading = $cam_loc;
      } ?>

      <div class="panel-body">
        <div class="row">
          <div class="col-md-2" align="center">
            <div class="list-group">
              <a class="list-group-item">Model: <strong><?php echo $cams->model; ?></strong></a>
              <a class="list-group-item">Ip Intern: <strong><?php echo $cams->ip_int; ?></strong></a>
              <a class="list-group-item">Ip Extern: <strong><?php echo $cams->ip_ext; ?></strong></a>
              <a class="list-group-item">Port: <strong><?php echo $cams->port; ?></strong></a>
              <a class="list-group-item">User: <strong><?php echo $cams->user; ?></strong></a>
              <a class="list-group-item">Pass: <strong><?php echo $cams->pass; ?></strong></a>
            </div>
          </div>
        </div>
      </div>
    </div>
  </ul>
<?php } ?>