编辑：

在这里，我在函数中注册了2个侧栏。名称为sidebar1和sidebar2的php。

$sidebar_args = array(
    \'name\'          => __( \'sidebar1\', \'theme_text_domain\' ),
    \'id\'            => \'sidebar-1\',
    \'description\'   => \'\',
        \'class\'         => \'\',
    \'before_widget\' => \'<li id="%1$s" class="widget %2$s">\',
    \'after_widget\'  => \'</li>\',
    \'before_title\'  => \'<h2 class="widgettitle">\',
    \'after_title\'   => \'</h2>\' );

register_sidebar( $sidebar_args );


$sidebar_args_2 = array(
    \'name\'          => __( \'sidebar2\', \'theme_text_domain\' ),
    \'id\'            => \'sidebar-2\',
    \'description\'   => \'\',
        \'class\'         => \'\',
    \'before_widget\' => \'<li id="%1$s" class="widget %2$s">\',
    \'after_widget\'  => \'</li>\',
    \'before_title\'  => \'<h2 class="widgettitle">\',
    \'after_title\'   => \'</h2>\' );

register_sidebar( $sidebar_args_2 );

<?php
    global $wp_registered_sidebars;
    $my_sidebars = $wp_registered_sidebars;

    foreach($my_sidebars as $my_sidebar){
        echo $my_sidebar[\'name\'];
    }

 ?>