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<?php $invalid_utf8 = "\xE9"; $result = preg_match('/^(.*)(\s+(DESC|ASC|))*$/Ui', $invalid_utf8, $matches); var_dump($result); var_dump($matches);
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
int(1) array(2) { [0]=> string(1) "�" [1]=> string(1) "�" }
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50.62 ms | 703 KiB | 4 Q