我试图通过添加节和设置来修改WordPress主题定制器，但无论我在functions.php 文件，自定义程序中不会显示任何内容。

这是我的代码：-

function starter_customize_register( $wp_customize ) 
{
    $wp_customize->add_panel( \'home_page_settings\', array(
        \'title\' => __( \'Home Page Settings\', \'starter\'),
        \'priority\' => 10,
        \'active_callback\' => \'is_front_page\'
    ) );

    $wp_customize->add_section( \'home_call_to_action_section\' , array(
        \'title\' => __(\'Call To Action\',\'starter\'),
        \'panel\' => \'home_page_settings\',
    ) );

    $wp_customize->add_setting( \'home_call_to_action_setting_section\', array(
        \'default\'        => __(\'WHAT IS RO PURIFIER?\', \'starter\'),
        \'sanitize_callback\' => \'starter_sanitize\',
    ));
    $wp_customize->add_control(\'cta_heading\', array(
        \'label\' => __(\'CTA Heading\',\'starter\'),
        \'section\' => \'home_call_to_action_section\',
        \'setting\'=>\'home_call_to_action_setting_section\'

    ));    
}
add_action( \'customize_register\', \'starter_customize_register\');