Convert new data format to the old one ( GatherContent API, >=v0.3) https://help.gathercontent.com/developer-api/

convert_from_new_config_structure.php

<?

function foreach_safe($arr) {
    if(is_array($arr)) {
        if(count($arr) > 0) {
            return true;
        }
    }

    return false;
}

function get_default_config() {

    $config = array(
        0 => (object) array(
            'label' => 'Content',
            'hidden' => false,
            'elements' => array()
            ),
        1 => (object) array(
            'label' => 'Meta',
            'hidden' => true,
            'elements' => array()
            )
        );

    return base64_encode(json_encode($config));
}

function convert_from_new_config_structure($config) {

    if($config == '') {
        $config = get_default_config();
    }

    $config = json_decode(base64_decode($config));

    $result = array(
        'page_config' => array(),
        'page_values' => array(),
        'meta_config' => array(),
        'meta_values' => array()
        );

    if(foreach_safe($config)) {
        foreach($config as $tab_id => $tab_pane) {
            if(foreach_safe($tab_pane->elements)) {
                foreach($tab_pane->elements as $element) {

                    switch($element->type) {
                        case 'text':
                            $el = array(
                                'type' =>         'text',
                                'name' =>         $element->name,
                                'label' =>        $element->label,
                                'instructions' => $element->microcopy,
                                'required' =>     $element->required?'Y':'N',
                                'limit' =>        $element->limit,
                                'limit_type' =>   $element->limit_type,
                                'plain_text' =>   $element->plain_text?'Y':'N'
                                );

                            if($tab_id === 0) {
                                $result['page_config'][] = $el;
                                $result['page_values'][$el['name']] = $element->value;
                            }
                            else {
                                $result['meta_config'][] = $el;
                                $result['meta_values'][$el['name']] = $$element->value;
                            }

                            break;

                        case 'section':
                            $el = array(
                                'type' =>         'section',
                                'name' =>         $element->name,
                                'label' =>        $element->title,
                                'instructions' => $element->subtitle
                                );

                            if($tab_id === 0) {
                                $result['page_config'][] = $el;
                            }
                            else {
                                $result['meta_config'][] = $el;
                            }

                            break;

                        case 'choice_radio':

                            $value = '';

                            $el = array(
                                'type' =>         'mc',
                                'name' =>         $element->name,
                                'label' =>        $element->label,
                                'instructions' => $element->microcopy,
                                'required' =>     $element->required?'Y':'N',
                                'options' =>      array()
                                );

                            if(foreach_safe($element->options)) {
                                foreach($element->options as $option) {
                                    $el['options'][] = array(
                                        'label' =>   $option->label,
                                        'val' =>     $option->label,
                                        'checked' => $option->selected?'Y':'N'
                                        );

                                    if($option->selected) {
                                        $value = $option->label;
                                    }
                                }
                            }

                            if($element->other_option) {
                                $last_option_id = count($el['options']) - 1;

                                $el['options'][$last_option_id]['allow_other'] = 'Y';

                                $other_option_value = $element->options[$last_option_id]->value;

                                if($tab_id === 0) {
                                    $result['page_values'][$el['name'].'_other'] = $other_option_value;
                                }
                                else {
                                    $result['meta_values'][$el['name'].'_other'] = $other_option_value;
                                }
                            }

                            if($tab_id === 0) {
                                $result['page_config'][] = $el;
                                $result['page_values'][$el['name']] = $value;
                            }
                            else {
                                $result['meta_config'][] = $el;
                                $result['meta_values'][$el['name']] = $value;
                            }

                            break;

                        case 'choice_checkbox':

                            $value = array();

                            $el = array(
                                'type' =>         'checkbox',
                                'name' =>         $element->name,
                                'label' =>        $element->label,
                                'instructions' => $element->microcopy,
                                'required' =>     $element->required?'Y':'N',
                                'options' =>      array()
                                );

                            if(foreach_safe($element->options)) {
                                foreach($element->options as $option) {
                                    $el['options'][] = array(
                                        'label' =>   $option->label,
                                        'val' =>     $option->label,
                                        'checked' => $option->selected?'Y':'N'
                                        );

                                    if($option->selected) {
                                        $value[] = $option->label;
                                    }
                                }
                            }

                            if($tab_id === 0) {
                                $result['page_config'][] = $el;
                                $result['page_values'][$el['name']] = $value;
                            }
                            else {
                                $result['meta_config'][] = $el;
                                $result['meta_values'][$el['name']] = $value;
                            }

                            break;

                        case 'files':

                            $el = array(
                                'type' =>         'attach',
                                'name' =>         $element->name,
                                'label' =>        $element->label,
                                'instructions' => $element->microcopy,
                                'required' =>     $element->required?'Y':'N'
                                );

                            if($tab_id === 0) {
                                $result['page_config'][] = $el;
                            }
                            else {
                                $result['meta_config'][] = $el;
                            }

                            break;

                        default:
                            // nothing here!
                    }
                }
            }
        }
    }

    $result['page_config'] = serialize($result['page_config']);
    $result['page_values'] = serialize($result['page_values']);
    $result['meta_config'] = serialize($result['meta_config']);
    $result['meta_values'] = serialize($result['meta_values']);

    return $result;
}