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<?php var_export('/^[' . preg_quote(',!@%^*()={};~`<>?\|' . ']*$/u'), true);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Cls8Q
function name:  (null)
number of ops:  9
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_export'
          1        INIT_FCALL                                               'preg_quote'
          2        SEND_VAL                                                 '%2C%21%40%25%5E%2A%28%29%3D%7B%7D%3B%7E%60%3C%3E%3F%5C%7C%5D%2A%24%2Fu'
          3        DO_ICALL                                         $0      
          4        CONCAT                                           ~1      '%2F%5E%5B', $0
          5        SEND_VAL                                                 ~1
          6        SEND_VAL                                                 <true>
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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