create new functionality in modx manager

$output = "<ul>";
foreach ($row as $line) {
    $output .= "<li>" . $line['name'] . " - " . $line['description'] . "</li>";
}
$output .= "</ul>";
return $output;

$conn=mysql_connect("localhost","root","");
$db=mysql_select_db("paragon",$conn);

$query=mysql_query("select *  from modx_menus");
$output = "<ul>";
foreach ($query as $line) {
    $output .= "<li>" . $line['text']. "</li>";
}
$output .= "</ul>";

return $output;

 Warning: Invalid argument supplied for foreach() in D:\xampp\htdocs\paragon\core\components\newsletter\index.php on line 14

$o = include dirname(__FILE__).'/chirag/welcome.php';
return $o;