+++ /dev/null
-<?php
-/**
- * Twenty Thirteen back compat functionality
- *
- * Prevents Twenty Thirteen from running on WordPress versions prior to 3.6,
- * since this theme is not meant to be backward compatible and relies on
- * many new functions and markup changes introduced in 3.6.
- *
- * @package WordPress
- * @subpackage Twenty_Thirteen
- * @since Twenty Thirteen 1.0
- */
-
-/**
- * Prevent switching to Twenty Thirteen on old versions of WordPress.
- *
- * Switches to the default theme.
- *
- * @since Twenty Thirteen 1.0
- */
-function twentythirteen_switch_theme() {
- switch_theme( WP_DEFAULT_THEME, WP_DEFAULT_THEME );
- unset( $_GET['activated'] );
- add_action( 'admin_notices', 'twentythirteen_upgrade_notice' );
-}
-add_action( 'after_switch_theme', 'twentythirteen_switch_theme' );
-
-/**
- * Add message for unsuccessful theme switch.
- *
- * Prints an update nag after an unsuccessful attempt to switch to
- * Twenty Thirteen on WordPress versions prior to 3.6.
- *
- * @since Twenty Thirteen 1.0
- */
-function twentythirteen_upgrade_notice() {
- $message = sprintf( __( 'Twenty Thirteen requires at least WordPress version 3.6. You are running version %s. Please upgrade and try again.', 'twentythirteen' ), $GLOBALS['wp_version'] );
- printf( '<div class="error"><p>%s</p></div>', $message );
-}
-
-/**
- * Prevent the Theme Customizer from being loaded on WordPress versions prior to 3.6.
- *
- * @since Twenty Thirteen 1.0
- */
-function twentythirteen_customize() {
- wp_die( sprintf( __( 'Twenty Thirteen requires at least WordPress version 3.6. You are running version %s. Please upgrade and try again.', 'twentythirteen' ), $GLOBALS['wp_version'] ), '', array(
- 'back_link' => true,
- ) );
-}
-add_action( 'load-customize.php', 'twentythirteen_customize' );
-
-/**
- * Prevent the Theme Preview from being loaded on WordPress versions prior to 3.4.
- *
- * @since Twenty Thirteen 1.0
- */
-function twentythirteen_preview() {
- if ( isset( $_GET['preview'] ) ) {
- wp_die( sprintf( __( 'Twenty Thirteen requires at least WordPress version 3.6. You are running version %s. Please upgrade and try again.', 'twentythirteen' ), $GLOBALS['wp_version'] ) );
- }
-}
-add_action( 'template_redirect', 'twentythirteen_preview' );