Identify a Woocommerce page by WordPress conditional tags
You can rewrite you code as <title> <?php if (!function_exists( ‘is_product_category’ )) { if( is_product_category( ‘cds’ ) ) { ?> CD <?php } elseif ( is_product_category( ‘dvds’ ) ) {?> DVD <?php } }else { wp_title( ‘|’, true, ‘right’ ); } ?>