add_action( \'customize_register\', \'theme_customize_register\' );


/**
 * Register individual settings through customizer\'s API.
 *
 * @param WP_Customize_Manager $wp_customize Customizer reference.
 */
function theme_customize_register( $wp_customize ) {

    // You can first start by adding a section
    
    $wp_customize->add_section(
        \'theme_options\',
        array(
            \'title\'       => __( \'Title of your section\', \'domain\' ),
            \'capability\'  => \'edit_theme_options\',
            \'description\' => __( \'Some description\', \'domain\' ),
            \'priority\'    => 160,
        )
    );
    $wp_customize->add_setting(
        \'field_name\',
        array(
            \'type\'              => \'textarea\',
            \'sanitize_callback\' => \'theme_sanitize_text\', // You can sanitize the text afterwards through this function
            \'capability\'        => \'edit_theme_options\',
        )
    );

}

要访问您的设置，您可以使用

get_theme_mod(\'field_name\');