eme_options') || ! isset( $_POST['attachment_id'] ) ) exit; $attachment_id = absint($_POST['attachment_id']); /** This filter is documented in wp-admin/includes/media.php */ $sizes = array_keys(apply_filters( 'image_size_names_choose', array('thumbnail' => __('Thumbnail'), 'medium' => __('Medium'), 'large' => __('Large'), 'full' => __('Full Size')) )); $size = 'thumbnail'; if ( in_array( $_POST['size'], $sizes ) ) $size = esc_attr( $_POST['size'] ); update_post_meta( $attachment_id, '_wp_attachment_is_custom_background', get_option('stylesheet' ) ); $url = wp_get_attachment_image_src( $attachment_id, $size ); $thumbnail = wp_get_attachment_image_src( $attachment_id, 'thumbnail' ); set_theme_mod( 'background_image', esc_url_raw( $url[0] ) ); set_theme_mod( 'background_image_thumb', esc_url_raw( $thumbnail[0] ) ); exit; } }