PHP Warnings

PHP8.1 came out on 25/11/21, so its unlikely this error is coming from WooCommerce, which is kept up-to-date. It may be coming from some other software which is trying to use WooCommerce functions.

Have you carried out a conflict test. Switch to the Storefront theme and deactivate all plugins except WooCommerce. The site should work without error now? Reactivate one by one and check to try to identify the software element which is not 8.1 compatible.

@dssunil you can try: Woocommerce -> Status -> Tools

Clear all cache and transients. It helped me.

EDIT:
Unfortunately only for a moment

• This reply was modified 3 years, 2 months ago by BDR Bros..

Note that below is temporary solution because if you update woocommerce, the change will be replaced (but hoping thew updates from woocommerce would solve the problem)

First backup this file so that you can replace it if there is a problem later:

Edit line 139 of that file with error as follows:

if ( strstr( isset($path)?$path:' ', $customer_logout ) || strstr( isset($query)?$query:'', $customer_logout ) ) {
 unset( $items[ $key ] );
}

Just replace strstr( $path, $customer_logout ) with strstr( isset($path)?$path:’ ‘, $customer_logout )
and
replace strstr( $query, $customer_logout ) with strstr( isset($query)?$query:”, $customer_logout )

To Just avoid mistakes, because you are not a coder, copy this code and replace line 139

if ( strstr( isset($path)?$path:'', $customer_logout ) || strstr( isset($query)?$query:'', $customer_logout ) ) {

I suspect you might have used double quote (“) instead of single quotes (”)

I am using this code right now in my project and this code stopped the error. my woocommerce version is Version 7.7.2… on php 8.1

• This reply was modified 2 years, 9 months ago by jkkenzie.
• This reply was modified 2 years, 9 months ago by jkkenzie.