Process Group Repeats Programmatically

I am trying to access my form entries with php and have troubles into creating an object that reflects users data entries. I don’t understand the logic which the child fields of a repeatable group follow. some seem to have suffix “-\d” some seem to count up. So in my child there are ids like ‘text-2-2’ and upload-2 in the second iteration. How can I summarize these?

Are there any helper functions that return a workable object/array from the fields? I havent dug too deep into the code, but couldnt understand the enumeration logics.

Following code examples from the web I have accomplished the label/field_id mapping. Yet for child-elements of groups it doesnt seem to work. I’ve played a bit regex and parent keys to bring things together…

add_shortcode('forminator_entries', __NAMESPACE__ . '\\forminator_entries');

function forminator_entries()
{
    $form_id = 63983;
    // Get the form details
    $form = \Forminator_API::get_form($form_id);
    $entries = \Forminator_API::get_form_entries($form->id);

    $field_labels = array();
    $submissions = array();

    // Get fields labels with hierarchy
    if (!is_null($form)) {
        if (is_array($form->fields)) {
            foreach ($form->fields as $field) {
                /** @var Forminator_Form_Field_Model $field */
                if (!empty($field->parent_group)) {
                    // Handle fields within groups
                    if (!isset($field_labels[$field->parent_group])) {
                        $field_labels[$field->parent_group] = array();
                    }
                    // Attempt to assign the field label
                    $field_labels[$field->slug] = [
                        'label' => $field->get_label_for_entry(),
                        'parent' => $field->parent_group,
                    ];
                } else {
                    // Handle top-level fields
                    $field_labels[$field->slug] = [
                        'label' => $field->get_label_for_entry(),
                        'parent' => null,
                    ];
                }
            }
        }
    }

    // Set limit
    $limit = count($entries);

    // Collect entries
    for ($i = 0; $i < $limit; $i++) {
        /** @var Forminator_Form_Entry_Model $entry */
        $entry = $entries[$i];
        $entry_data = array(
            'id' => $entry->entry_id,
            'time' => $entry->time_created,
            'fields' => array(),
        );

        foreach ($entry->meta_data as $field_id => $meta) {

            $cleanField = preg_replace('/-\d+(-\d+)$/', '$1', $field_id);
                        
            if (isset($field_labels[$cleanField]['label'])) {
                
                $label = $field_labels[$cleanField]['label'];
                $parent = $field_labels[$cleanField]['parent'];

                if ($parent) {
                    $pattern = '/-\d+-(\d+)/';
                    if (preg_match($pattern, $field_id, $matches)) {
                        $grouped_count = $matches[1];
                    } else {
                        $grouped_count = 0;
                    }

                    $entry_data[$parent][$grouped_count][$label] = $meta['value'];
                    do_action('qm/debug',[$field_id,$cleanField,$grouped_count,$parent,$label ] );
                } else {
                    $entry_data[$label] = $meta['value'];
                }
            } else {
                do_action('qm/debug','doesnotexist:' .$cleanField);
            }
        }

        // TODO foreach group
    

        // Check if the custom post type with meta 'spenden_id' exists
        $existing_post = get_posts(array(
            'post_type' => 'moebelspende',
            'meta_key' => 'spenden_id',
            'meta_value' => $entry->entry_id,
            'posts_per_page' => 1,
        ));

        // If no existing post, create a new one
        if (empty($existing_post)) {
            $post_id = wp_insert_post(array(
                'post_title' => 'Entry ID ' . $entry->entry_id,
                'post_type' => 'moebelspende',
                'post_status' => 'publish',
            ));            
        } else {
            $post_id = $existing_post[0]->ID;
        }


        $post_data = array(
            'ID'           => $post_id,
            //DEBUG
            //'post_content' => '<h2>Fields</h2><pre>' . print_r($entry_data,true) . '</pre>' . '<h2>Labels</h2><pre>' . print_r($field_labels,true) . '</pre>',
            'meta_input'   => array(
                'spenden_id'  => $entry->entry_id,
                'time_created' => $entry->time_created,
            )
        );
    
        foreach ($entry_data as $field_key => $field_value) {
            $post_data['meta_input'][$field_key] = $field_value;
        }
    
        // DEBUG
        //wp_update_post($post_data);    

        $submissions[] = $entry_data;
    }

    
    $test = '<h2>Raw</h2><pre>' . print_r($submissions, true) . '</pre>';

    return $test;
}

Any help is kindly appreciated!