Sold out Button (woo)

Functions File

add_action( 'woocommerce_before_shop_loop_item_title', 'bbloomer_display_sold_out_loop_woocommerce' );
 
function bbloomer_display_sold_out_loop_woocommerce() {
    global $product;
 
    if ( !$product->is_in_stock() ) {
        echo '<span class="soldout">' . __( 'SOLD OUT', 'woocommerce' ) . '</span>';
    }
}

Stylesheet

.soldout{padding:3px 8px;text-align:center;background:#222;color:white;font-weight:bold;position:absolute;top:6px;right:6px;font-size:12px;}