我正在wordpress 3.8上使用一个儿童主题“Twenty14”。在调试模式下，我会遇到以下关于小部件的错误。

注意：正在尝试获取\\wordpress\\wp content\\themes\\tema2014\\functions\\widgets中非对象的属性。php在线148

update_post_meta($post->ID, "_sidebar", $_POST["link"]);

注意：未定义的索引：link in\\wordpress\\wp content\\themes\\tema2014\\functions\\widgets。php在线148

update_post_meta($post->ID, "_sidebar", $_POST["link"]);

注意：未定义索引：\\u\\wordpress\\wp content\\themes\\tema2014\\functions\\widgets中的侧栏。php在线121

$link    = $custom["_sidebar"][0];

$dynamic_widget_areas = array (
                                \'sidebar-21\'       => __( \'Page Specific Sidebar 1\', \'pietergoosen\' ),
                                \'sidebar-22\'       => __( \'Page Specific Sidebar 2\', \'pietergoosen\' ),
                                \'sidebar-23\'       => __( \'Page Specific Sidebar 3\', \'pietergoosen\' ),
                                \'sidebar-24\'       => __( \'Page Specific Sidebar 4\', \'pietergoosen\' ),
                                \'sidebar-25\'       => __( \'Page Specific Sidebar 5\', \'pietergoosen\' ),
                                \'sidebar-26\'       => __( \'Page Specific Sidebar 6\', \'pietergoosen\' ),
                                \'sidebar-27\'       => __( \'Page Specific Sidebar 7\', \'pietergoosen\' ),
                                \'sidebar-28\'       => __( \'Page Specific Sidebar 8\', \'pietergoosen\' ),
                                \'sidebar-29\'       => __( \'Page Specific Sidebar 9\', \'pietergoosen\' ),
                                \'sidebar-30\'       => __( \'Page Specific Sidebar 10\', \'pietergoosen\' ),
                );

foreach ( $dynamic_widget_areas as $id => $dynamic_widget_area ) {
        register_sidebar(
                array (
                \'name\'          => __( $dynamic_widget_area, \'pietergoosen\' ),
                \'id\'            =>  $id,
                                \'description\'   => __( \'Page specific sidebars above the content sidebar\', \'pietergoosen\' ),
                                \'before_widget\' => \'<aside id="%1$s" class="widget %2$s">\',
                                \'after_widget\'  => \'</aside>\',
                                \'before_title\'  => \'<h1 class="widget-title">\',
                                \'after_title\'   => \'</h1>\',
        ));
    }
}
add_action( \'widgets_init\', \'pietergoosen_widgets_init\' );     

// Add dynamic sidebars
add_action(\'admin_init\', \'sidebar_init\');
        add_action(\'save_post\', \'save_sidebar_link\');
        function sidebar_init(){
                add_meta_box("sidebar_meta", "Sidebar options", "sidebar_link", "page", "side", "default");
        }
        function sidebar_link(){
                global $post, $dynamic_widget_areas;
                $custom  = get_post_custom($post->ID);
                $link    = $custom["_sidebar"][0];
        ?>
<div class="link_header">
        <?
        echo \'<select name="link" class="sidebar-selection">\';
        echo \'<option>Choose Sidebar</option>\';
        echo \'<option>No sidebars to choose from</option>\';
        foreach ( $dynamic_widget_areas as $list ){
                    if($link == $list){
                      echo \'<option value="\'.$list.\'" selected="true">\'.$list.\'</option>\';
                        }else{
                      echo \'<option value="\'.$list.\'">\'.$list.\'</option>\';
                        }
                }
        echo \'</select><br />\';
        ?>
</div>
<p>Choose the sidebar to use with this page.</p>
<?php
}
function save_sidebar_link(){
global $post;
if (defined(\'DOING_AUTOSAVE\') && DOING_AUTOSAVE) {return $post->ID;}
        update_post_meta($post->ID, "_sidebar", $_POST["link"]);
}
add_action(\'admin_head\', \'sidebar_css\');
function sidebar_css() {
        echo\'
        <style type="text/css">
                .sidebar-selection{width:100%;}
        </style>
        \';
}