FormieContentValues.php

<?php

namespace datacode\app\services\formie;

use ReflectionClass;

class Helper
{
  public static function getFormField($formieField)
  {
      $fields = [];
      $className = (new ReflectionClass($formieField))->getShortName();
      if (in_array($className, ['FlexField', 'Section'])) {
          return $fields;
      }

      if (in_array($className, ['Group'])) {
          $groupFields = $formieField->getFields();

          foreach ($groupFields as $groupField) {
              $groupFieldClassName = (new ReflectionClass($groupField))->getShortName();

              if (in_array($groupFieldClassName, ['Group'])) {
                  return self::getFormField($groupFieldClassName);
              } else {
                  $fields[] = $groupField;
              }
          }
      } else {
          $fields[] = $formieField;
      }

      return $fields;
  }

  public static function getFormFields($formieForm)
  {
      $formieFields = $formieForm->getFields();
      $fields = [];

      foreach ($formieFields as $formieField) {
          foreach (self::getFormField($formieField) as $field) {
              $fields[] = $field;
          }
      }

      return $fields;
  }
}