我正在开发一个自定义快捷码：

[abuzz-store slug="woolworths" fields="description,level,phone" more="true"]

短代码在网站前端正常工作。但是，我无法再在wp admin中保存对页面的编辑。尝试在适当的模板之外执行短代码时会引发各种PHP错误。

以下是短代码功能：

/**
 * [indo_store_details_shortcode description]
 *
 * @param  [type] $atts [description]
 * @return [type]       [description]
 */
function indo_store_details_shortcode($atts)
{
    $options = shortcode_atts(array(
        // Abuzz Store slug
        \'slug\'      => \'\',

        // Abuzz Store fields to display (title, description, level, phone)
        \'fields\'    => \'\',

        // Display a link to further store details (store page)
        \'more\'      => false,
    ), $atts);

    // sanity checks
    if (!$options[\'slug\']) return \'\';
    // if (is_admin()) return \'\';

    $output = \'\';

    // retrieve store information
    $store = get_posts(array(
        \'name\' => $options[\'slug\'],
        \'post_type\' => \'store\',
    ))[0];

    // determine fields to display
    $fields = explode(\',\', $options[\'fields\']);

    $output .= \'<article class="abuzz-store">\';

    // title field
    if (in_array(\'title\', $fields)) {
        $output .= sprintf(\'<h2>%s</h2>\', $post->post_title);
    }

    // "metadata" .options-list
    if (in_array(\'level\', $fields) ||
        in_array(\'phone\', $fields)) {

        $output .= \'<ul class="nav  options-list">\';

        // level field
        if (in_array(\'level\', $fields)) {
            $levels = get_group(\'Level\', $store->ID);

            $output .= sprintf(\'<li class="icon-text"><i class="icon-text__icon  icon  icon-level-black"></i> %s</li>\', indo_combine_levels($levels));
        }

        // phone field
        if (in_array(\'phone\', $fields)) {
            $output .= sprintf(\'<li class="icon-text"><i class="icon-text__icon  icon  icon-phone-black"></i> %s</li>\', get(\'phone_number\', 1, 1, $store->ID));
        }

        $output .= \'</ul>\';

    }

    // description field
    if (in_array(\'description\', $fields)) {
        $output .= get(\'information_text\', 1, 1, $store->ID);
    }

    // "More details" link
    if ($options[\'more\']) {
        $output .= sprintf(\'<p><a href="%s" title="More details" class="btn  btn--black-arrow  icon-text--rev">More details  <i class="icon-text__icon  icon  icon-arrow-white"></i></a></p>\', get_permalink($store->ID));
    }

    $output .= "</article>\\n";

    return $output;
}
add_shortcode(\'abuzz-store\', \'indo_store_details_shortcode\');

错误：Fatal error: Call to undefined function get_group() in D:\\xampp\\htdocs\\126-indooroopilly-shopping-centre\\www\\public_html\\wp-content\\themes\\indooroopilly\\include\\shortcodes.php on line 90

get_group 是由第三方插件（Magic Fields）添加的函数，该插件未加载到wp admin中。这正是我所期望的。

为什么在保存页面时执行此操作？

function indo_store_details_shortcode( $attr ) {
  ob_start();

  //Add all your shortcode stuff here

  return ob_get_clean();
}
add_shortcode( \'abuzz-store\', \'indo_store_details_shortcode\' );