Drupal 7 Search Nodes with Code

<?

$nodes = db_select('node', 'n')
    ->fields('n', array('nid'))
    ->condition('n.type','common_sto', '<>')
    ->execute();

foreach ($nodes as $node)
{
$loadednode = node_load($node->nid);
$wrapper = entity_metadata_wrapper('node', $loadednode);
$body_value = $wrapper->body->raw();
$strpos1 = strpos($body_value['value'],'drupal_page_is_cacheable');

if ($strpos1 > 0)
    echo '<a target="_blank" href="/node/'.$node->nid.'">'.$loadednode->title.'</a><br>';

}

?>