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 custom code?

You should place custom PHP in functions.php and custom CSS in style.css of your child theme: where to place WooCommerce customization?

This code still works, unless you report otherwise. To exclude conflicts, temporarily switch to the Storefront theme, disable all plugins except WooCommerce, and test the snippet again: WooCommerce troubleshooting 101

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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. Follow @rmelogli

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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