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run code in 150+ php & hhvm versions
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<?php //echo (int)!preg_match('/[a-z0-9:;,!\'\s*.?()"-]/im', '@3'); //проверка отсуствия разрешенных символов echo (int)!preg_match_all('/^[a-z0-9:;,!\'\s*.?()"-]+$/im', "aaa\nb@bb\nccc", $match); //проверка наличия запрещенных символов echo preg_replace('/^[a-z0-9:;,!\'\s*.?()"-]+$/im', '<$0>' , "aaa\nb@bb\nccc"); //проверка наличия запрещенных символов
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
0<aaa> b@bb <ccc>
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/RNUvp on line 4
Process exited with code 255.