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<?php var_export( preg_match(base64_decode(base64_encode('/^\\\\$/')), '\\') );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/YLRvS
function name:  (null)
number of ops:  14
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_export'
    4     1        INIT_FCALL                                               'preg_match'
          2        INIT_FCALL                                               'base64_decode'
          3        INIT_FCALL                                               'base64_encode'
          4        SEND_VAL                                                 '%2F%5E%5C%5C%24%2F'
          5        DO_ICALL                                         $0      
          6        SEND_VAR                                                 $0
          7        DO_ICALL                                         $1      
          8        SEND_VAR                                                 $1
          9        SEND_VAL                                                 '%5C'
         10        DO_ICALL                                         $2      
         11        SEND_VAR                                                 $2
    3    12        DO_ICALL                                                 
    5    13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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