esc_attr__( 'Activate Dark Mode', 'allx' ), 'white' => esc_attr__( 'Activate White Mode', 'allx' ), ); if ( array_key_exists( $input, $valid ) ) { return $input; } else { return ''; } } $wp_customize->add_section( 'section_dark_mode' , array( 'title' => __( 'Button Dark Mode', 'allx' ), 'priority' => 1, ) ); $wp_customize->add_setting( 'activate_dark_mode', array ( 'sanitize_callback' => 'allx_dark_sanitize', 'default' => 'white' ) ); $wp_customize->add_control( new WP_Customize_Control( $wp_customize, 'activate_dark_mode', array( 'label' => __( 'Activate Dark and White Mode', 'allx' ), 'description' => __( 'This option allows you to switch between dark and white mode.', 'allx' ), 'section' => 'section_dark_mode', 'settings' => 'activate_dark_mode', 'type' => 'select', 'priority' => 1, 'choices' => array( 'dark' => esc_attr__( 'Activate Dark Mode', 'allx' ), 'white' => esc_attr__( 'Activate White Mode', 'allx' ), ), ) ) ); }