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<?php echo (int)!preg_match('/[a-z0-9:;,!\'\s*.?()"-]/im', '@#'); //проверка отсуствия разрешенных символов
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KfVPQ
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'preg_match'
          1        SEND_VAL                                                 '%2F%5Ba-z0-9%3A%3B%2C%21%27%5Cs%2A.%3F%28%29%22-%5D%2Fim'
          2        SEND_VAL                                                 '%40%23'
          3        DO_ICALL                                         $0      
          4        BOOL_NOT                                         ~1      $0
          5        CAST                                          4  ~2      ~1
          6        ECHO                                                     ~2
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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