<?php
const HOST = 'localhost';
const USER = 'abhinav';
const PASS = '1234';
const DB = 'abh';


try
{
  $conn = new PDO("mysql:host = ".HOST.";dbname = ".DB."", USER, PASS);
  if($conn)
  {
    echo "success";
  }
  else
  {
    echo "error";
  }
  $query  = "select uid from users";
  foreach($conn->query($query) as $row)
  {
    echo $row['uid'];
  }
  $conn = null;
}
catch(PDOException $e)
{
  echo $e->getMessage();
}
?>


//it is giving me following message ....successPHP Warning:  Invalid argument supplied for foreach() in /home/abhinav/pdo_test.php on line 20....please help me how to fix it