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<?php setlocale(LC_ALL, 'ru_RU.cp1251'); echo preg_replace ('/[^\p{L}\d]/i', ' ', 'ёйцукенгшщзхъфывапролджэячсмитьбю1234567890'); echo preg_last_error();
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
� � � � ке� � � � � � � � � � � � � � � � � � � � � � � � � � � 12345678900
Output for 5.0.5, 5.1.0 - 5.1.6
� � � � ке� � � � � � � � � � � � � � � � � � � � � � � � � � � 1234567890 Fatal error: Call to undefined function preg_last_error() in /in/0lhAB on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Warning: preg_replace(): Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 3 in /in/0lhAB on line 3 Fatal error: Call to undefined function preg_last_error() in /in/0lhAB on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
� � � � ке� � � � � � � � � � � � � � � � � � � � � � � � � � � 1234567890 Fatal error: Call to undefined function: preg_last_error() in /in/0lhAB on line 4
Process exited with code 255.
Output for 4.4.0 - 4.4.4
� � � � ке� � � � � � � � � � � � � � � � � � � � � � � � � � � 1234567890 Fatal error: Call to undefined function: preg_last_error() in /in/0lhAB on line 4
Process exited with code 255.
Output for 4.3.11
Warning: preg_replace(): Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 3 in /in/0lhAB on line 3 Fatal error: Call to undefined function: preg_last_error() in /in/0lhAB on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.10
Warning: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 3 in /in/0lhAB on line 3 Fatal error: Call to undefined function: preg_last_error() in /in/0lhAB on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Warning: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 3 in /in/0lhAB on line 3 Fatal error: Call to undefined function: preg_last_error() in /in/0lhAB on line 4

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