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<?php preg_match_all( '/[\p{Cyrillic}]/u', "ZАiKS, со wаrtо wiеdziеć о соvеrааć оdmiеnniе", $matches); var_dump($matches); ?>
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(1) { [0]=> array(16) { [0]=> string(2) "А" [1]=> string(2) "с" [2]=> string(2) "о" [3]=> string(2) "а" [4]=> string(2) "о" [5]=> string(2) "е" [6]=> string(2) "е" [7]=> string(2) "о" [8]=> string(2) "с" [9]=> string(2) "о" [10]=> string(2) "е" [11]=> string(2) "а" [12]=> string(2) "а" [13]=> string(2) "о" [14]=> string(2) "е" [15]=> string(2) "е" } }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(1) { [0]=> array(16) { [0]=> string(2) "А" [1]=> string(2) "с" [2]=> string(2) "о" [3]=> string(2) "а" [4]=> string(2) "о" [5]=> string(2) "е" [6]=> string(2) "е" [7]=> string(2) "о" [8]=> string(2) "с" [9]=> string(2) "о" [10]=> string(2) "е" [11]=> string(2) "а" [12]=> string(2) "а" [13]=> string(2) "о" [14]=> string(2) "е" [15]=> string(2) "е" } }

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