Log out klappt nicht

* @param string $redirect Optional path to redirect to on login/logout.
 */
function wp_loginout($redirect = '') {
    if ( ! is_user_logged_in() )
        $link = '<a href="' . esc_url( wp_login_url($redirect) ) . '">' . __('Log in') . '</a>';
    else
        $link = '<a href="' . esc_url( wp_logout_url($redirect) ) . '">' . __('Log out') . '</a>';
                         




    echo apply_filters('loginout', $link);
}


/**
 * Returns the Log Out URL.
 *
 * Returns the URL that allows the user to log out of the site
 *
 * @since 2.7
 * @uses wp_nonce_url() To protect against CSRF
 * @uses site_url() To generate the log in URL
 * @uses apply_filters() calls 'logout_url' hook on final logout url
 *
 * @param string $redirect Path to redirect to on logout.
 */
function wp_logout_url($redirect = '') {
    $args = array( 'action' => 'logout' );
    if ( !empty($redirect) ) {
        $args['redirect_to'] = $redirect;
    }


    $logout_url = add_query_arg($args, site_url('wp-login.php', 'login'));
    $logout_url = wp_nonce_url( $logout_url, 'log-out' );


    return apply_filters('logout_url', $logout_url, $redirect);
}


/**
 * Returns the Log In URL.
 *
 * Returns the URL that allows the user to log in to the site
 *
 * @since 2.7
 * @uses site_url() To generate the log in URL
 * @uses apply_filters() calls 'login_url' hook on final login url
 *
 * @param string $redirect Path to redirect to on login.
 */
function wp_login_url($redirect = '') {
    $login_url = site_url('wp-login.php', 'login');


    if ( !empty($redirect) ) {
        $login_url = add_query_arg('redirect_to', urlencode($redirect), $login_url);
    }


    return apply_filters('login_url', $login_url, $redirect);
}


/**
 * Returns the Lost Password URL.
 *
 * Returns the URL that allows the user to retrieve the lost password
 *
 * @since 2.8.0
 * @uses site_url() To generate the lost password URL
 * @uses apply_filters() calls 'lostpassword_url' hook on the lostpassword url
 *
 * @param string $redirect Path to redirect to on login.
 */
function wp_lostpassword_url($redirect = '') {
    $args = array( 'action' => 'lostpassword' );
    if ( !empty($redirect) ) {
        $args['redirect_to'] = $redirect;
    }


    $lostpassword_url = add_query_arg($args, site_url('wp-login.php', 'login'));
    return apply_filters('lostpassword_url', $lostpassword_url, $redirect);
}