document::getElementsByClassName("")

getElementsByClassName.php

<?php

class document {
  public static function getElementsByClassName($name) {
    global $xpath;
    $nodes = array();
    $elements = $xpath->query(sprintf("//div[contains(@class, '%s')]", $name));
    foreach ($elements as $e) {
      array_push($nodes, $e);
    }
    return $nodes;
  }
}

?>

Thanks a lot !
Still usefull eleven years later !