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<?php $locale = 'cs_CZ.ISO8859-2'; setlocale( LC_CTYPE, $locale); $char = 'ž'; echo "Testing strtoupper('{$char}') on different PHP versions:\n"; echo "Expected result: Ž\n"; echo 'Actual result: ' . strtoupper($char) . "\n";
Output for 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
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 - 8.1.34
Testing strtoupper('ž') on different PHP versions: Expected result: Ž Actual result: Ů
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101.01 ms | 1254 KiB | 4 Q