当用户登录并且我正在使用is\\u user\\u logged\\u函数时，我正在尝试更改侧栏。以下是代码-

<!-- BEGIN sidebar -->

<?php
/**
 * The Sidebar containing the primary and secondary widget areas.
 *
 * @package WordPress
 * @subpackage Twenty_Ten
 * @since Twenty Ten 1.0
 */
?>

        <div id="primary" class="widget-area" role="complementary">
            <ul class="xoxo">

<?php
    /* When we call the dynamic_sidebar() function, it\'ll spit out
     * the widgets for that widget area. If it instead returns false,
     * then the sidebar simply doesn\'t exist, so we\'ll hard-code in
     * some default sidebar stuff just in case.
     */
    if ( ! dynamic_sidebar( \'primary-widget-area\' ) ) : ?>


<li class="widget-container">
<h3 class="widget-title">Sign In / Register</h3>
<ul>    
<?php if ( is_user_logged_in() ) { echo \'Welcome, registered user!\';} else { echo \'Welcome, unregistered user!\';} ?>
</ul>
</li>


    <li id="meta" class="widget-container">
                <h3 class="widget-title"><?php _e( \'Meta\', \'twentyten\' ); ?></h3>
                <ul>
                    <?php wp_register(); ?>
                    <li><?php wp_loginout(); ?></li>
                    <?php wp_meta(); ?>
                </ul>
            </li>

        <?php endif; // end primary widget area ?>
            </ul>
        </div><!-- #primary .widget-area -->



<!-- END sidebar -->