gistfile1.php

<?php

function get_orders($user){
  $query = new EntityFieldQuery();
  $query->entityCondition('entity_type','commerce_order');
  $query->entityCondition('bundle', 'commerce_order');
  $query->propertyCondition('user','uid',$user,'=');
  $results = $query->execute['commerce_order'];
  if ($results){
    return $results;
  }
}
?>