- Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
- Testing strtoupper('ž') on different PHP versions: Expected result: Ž Actual result: ž
- Output for 4.3.0, 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33
- Testing strtoupper('ž') on different PHP versions: Expected result: Ž Actual result: Ů