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<?php $strings = [ 'Арг.ен!тина ма,нит нег$ра', 'S!um summ$us mu,s', 'Арг.ен!тина ма,нит нег$ра'.'S!um summ$us mu,s', ]; foreach($strings as $string) { $string = mb_strtolower($string); $preparedString = preg_replace('/[^\p{Cyrillic}\p{Latin}]/u', '', $string); echo $string.' -> '.$preparedString."\n"; }
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
арг.ен!тина ма,нит нег$ра -> аргентинаманитнегра s!um summ$us mu,s -> sumsummusmus арг.ен!тина ма,нит нег$раs!um summ$us mu,s -> аргентинаманитнеграsumsummusmus
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
���.��!���� ��,��� ���$�� -> s!um summ$us mu,s -> sumsummusmus ���.��!���� ��,��� ���$��s!um summ$us mu,s ->
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/govdO on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/govdO on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/govdO on line 2
Process exited with code 255.

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