PHP undefined array key warnings from region codes
Undefined array key PHP warnings flood the error log when stored region codes do not match the state format WooCommerce expects.
Tier II · Emerging Problems that are still building up.
4 public reports · first reported 4 April 2024 · last reported 14 March 2026
What's going wrong
Site owners running this shipping plugin alongside WooCommerce report repeated PHP warnings in their error logs, often when stored region codes do not match the state format WooCommerce expects.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 4 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.