crap.php

<?php

try {
  $db = new PDO("mysql:host=$C9_IP;dbname=$C9_DB", $C9_USER, $C9_PASS);
  $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch(Exception $ex) {
  die($ex->getMessage());
}

$tagStmt = $db->prepare("SELECT tag FROM Tag WHERE postid = :postid");
$tagStmt->bindValue(":postid", $row["id"]); 
$tagStmt->execute();
                        
while($tagRow = $tagStmt->fetch(PDO::FETCH_ASSOC)) { ?>
  <span class="label label-default">
    <?php echo $tagRow["tag"] ?>
  </span>

<?php        
}
?>