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<?php

/**
 * Twenty Sixteen back compat functionality
 *
 * Prevents Twenty Sixteen from running on WordPress versions prior to 4.4,
 * since this theme is not meant to be backward compatible beyond that and
 * relies on many newer functions and markup changes introduced in 4.4.
 *
 * @package WordPress
 * @subpackage Twenty_Sixteen
 * @since Twenty Sixteen 1.0
 */

/* function twentysixteen_switch_theme() – Prevent switching to Twenty Sixteen on old versions of WordPress. */
add_action( 'after_switch_theme', 'twentysixteen_switch_theme' );

/* function twentysixteen_upgrade_notice() – Adds a message for unsuccessful theme switch. */

/* function twentysixteen_customize() – Prevents the Customizer from being loaded on WordPress versions prior to 4.4. */
add_action( 'load-customize.php', 'twentysixteen_customize' );

/* function twentysixteen_preview() – Prevents the Theme Preview from being loaded on WordPress versions prior to 4.4. */
add_action( 'template_redirect', 'twentysixteen_preview' );
 

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