WooCommerce: is_single() Doesn’t Work [Solved]

When building custom functions and using hooks and filters, you may want to apply those changes to a unique product id: “If product id = xxx, then execute this function”.

Honestly, I tried to do that with the simplest of all solutions (is_single WordPress conditional tag) but it didn’t work for me. Hopefully, I can help you solve this in 2 seconds!

WooCommerce problem: is_single() doesn’t work for product IDs

add_action( 'woocommerce_before_single_product', 'bbloomer_run_this_for_specific_product_id' );

function bbloomer_run_this_for_specific_product_id() {
if ( is_single( 123 ) ) {
// whatever you try to do here for product id = 123 won't work

Solution: check $product->get_id() instead

add_action( 'woocommerce_before_single_product', 'bbloomer_run_this_for_specific_product_id' );

function bbloomer_run_this_for_specific_product_id() {
global $product;
if ( $product->get_id() == 123 ) {
// whatever you try to do here for product id = 123 will work

Where to add this snippet?

You can place PHP snippets at the bottom of your child theme functions.php file (before "?>" if you have it). CSS, on the other hand, goes in your child theme style.css file. Make sure you know what you are doing when editing such files - if you need more guidance, please take a look at my free video tutorial "Where to Place WooCommerce Customization?"

Does this snippet (still) work?

Please let me know in the comments if everything worked as expected. I would be happy to revise the snippet if you report otherwise (please provide screenshots). I have tested this code with Storefront theme, the WooCommerce version listed above and a WordPress-friendly hosting on PHP 7+.

If you think this code saved you time & money, please join other Business Bloomer supporters and avail of 365 days of WooCommerce benefits. Thank you in advance :)

Need Help with WooCommerce Customization?

Check out these free video tutorials. You can start learning how to customize WooCommerce without unnecessary plugins. Watch me code and learn by example!

  • how-to-edit-woocommerce-with-php-snippets
  • woocommerce-hooks-add_action-list-visual
  • woocommerce-customize-single-product-page-PHP

Rodolfo Melogli

Author, WooCommerce expert and WordCamp speaker, Rodolfo has worked as a WooCommerce freelancer since 2011. His goal is to help entrepreneurs and developers overcome their WooCommerce nightmares. Rodolfo loves travelling, chasing tennis & soccer balls and, of course, wood fired oven pizza.

2 thoughts on “WooCommerce: is_single() Doesn’t Work [Solved]

  1. I had to change this line

    if ($post->ID = ‘123’) {

    if ($post->ID == ‘123’) {

    to make the code only run on the desired post

    Did I miss something?

    1. Correct, thanks for spotting the typo!

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