Undefined offset: 0 in ../wp-includes/taxonomy.php on line 1903

[vasyltech]

The issue is pretty trivial. When there are no terms assigned to a post, the condition on 1894 will return false and this immediately will cause PHP error because $taxonomies array does not have any records inside.

To reproduce the issue, simply call wp_get_object_terms function with post, page or custom post type that does not have a single hierarchical term assigned to.

[vasyltech]

Straight forward fix for the "PHP Notice: Undefined offset: 0 in ../wp-includes/taxonomy.php on line 1903" error

[birgire]

Welcome to WordPress Trac @vasyltech

Thanks for the report.

But I'm unable to reproduce this.

I've attached my test in 43804.diff​

Can you elaborate further how we can reproduce the bug?

Thanks.

[desrosj]

I'm going to close this out because there has been no additional reporter-feedback for some time. @vasyltech if you are still experiencing this issue, please reopen with more context.