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 (delete "?>" if you have it there). 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 7.3.

If you think this code saved you time & money, feel free to join 14,000+ WooCommerce Weekly subscribers for blog post updates or 250+ Business Bloomer supporters for 365 days of WooCommerce benefits. Thank you in advance :)

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Rodolfo Melogli

Business Bloomer Founder

Author, WooCommerce expert and WordCamp speaker, Rodolfo has worked as an independent 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’) {

    to
    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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