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<?php function my_word_count($text) { preg_match_all("(\w+)u", $text, $matches); return count($matches[0]); } var_dump(my_word_count('мама'));
Output for 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
int(1)

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32.44 ms | 1151 KiB | 7 Q