I've created a few helper functions specifically for a project and I want them to be available globally.

I know I can include them via composer with the files key. I was wondering if there was a more "drupal way" sort of ...way, to include them?

  • Create a controller with a public funtion, you can call it anywhere with the namespace it have. Feb 16 '17 at 9:42
  • That's the way I'm currently doing it. I've created a service that has said functions. 2 of them to be exact. But it feels like a major overkill for such a simple problem. They're very simple functions which I don't feel require a service or a controller..
    – Andrew
    Feb 16 '17 at 9:44

The Drupal 8 way to define helper methods is to put them in a class as static methods.

Example from core:

namespace Drupal\Component\Utility;
 * Provides helper methods for byte conversions.
class Bytes {

  const KILOBYTE = 1024;

   * Parses a given byte size.
   * @param mixed $size
   *   An integer or string size expressed as a number of bytes with optional SI
   *   or IEC binary unit prefix (e.g. 2, 3K, 5MB, 10G, 6GiB, 8 bytes, 9mbytes).
   * @return int
   *   An integer representation of the size in bytes.
  public static function toInt($size) {
    // Remove the non-unit characters from the size.
    $unit = preg_replace('/[^bkmgtpezy]/i', '', $size);
    // Remove the non-numeric characters from the size.
    $size = preg_replace('/[^0-9\.]/', '', $size);
    if ($unit) {
      // Find the position of the unit in the ordered string which is the power
      // of magnitude to multiply a kilobyte by.
      return round($size * pow(self::KILOBYTE, stripos('bkmgtpezy', $unit[0])));
    else {
      return round($size);


and use it in code:

$upload_max = Bytes::toInt(ini_get('upload_max_filesize'));

Any functions you put in the .module file will be available globally and can be called from anywhere.

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