Written by Anonymous
add_action( 'save_post', function( $post_id ) { if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) { return; } $transient_id = TRANSIENT_AMP_PREFIX . $post_id; $transient_file = get_theme_amp_cache_path() . $transient_id; if ( file_exists( $transient_file ) ) { wp_filesystem_delete( $transient_file ); delete_db_cache_records( $transient_id ); } });