A loop for WordPress wp-forms plugin

WP_Form.php

<?php
class WP_Form implements WP_Form_Aggregate, WP_Form_Attributes_Interface
{
    public function getElements()
    {
        $elements = [];
        foreach ($this->elements as $element) {
            $dataBuffer = $element->getAttributes();
            if ($element instanceof WP_Form_Aggregate) {
                $dataBuffer['elements'] = $element->getElements();
            }
            $elements[] = $dataBuffer;
        }
        return $elements;
    }
}