<?php
class Res {
   public $id;
   public $pagetitle;

   public function info()
   {
      return '#'.$this->id.': '.$this->pagetitle . ' - ' . $this->longtitle;
   }
}

$query = "SELECT id,pagetitle,longtitle FROM modx_site_content WHERE id > :id LIMIT 12000";

$id = 10;

$result = $modx->prepare($query);

$result->setFetchMode(PDO::FETCH_CLASS, 'Res');

$result->execute(array(':id' => $id));

while ($res = $result->fetch()) {
    echo $res->info().'<br />'."\n";
}