Undefined textdomain warnings appear on PHP 8 sites
PHP 8 logs and admin screens show undefined $textdomain warnings from the plugin's main file.
Tier II · Emerging Problems that are still building up.
4 public reports · first reported 25 June 2018 · last reported 16 May 2025
What's going wrong
Site owners running this WordPress plugin on PHP 8 see warnings about an undefined textdomain variable.
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.