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<?php for ($i = 0; $i <= 255; $i++) var_dump(ord(chr($i) ^ chr(128)));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 13
Branch analysis from position: 13
2 jumps found. (Code = 44) Position 1 = 15, Position 2 = 2
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 2
2 jumps found. (Code = 44) Position 1 = 15, Position 2 = 2
Branch analysis from position: 15
Branch analysis from position: 2
filename:       /in/NhVmG
function name:  (null)
number of ops:  16
compiled vars:  !0 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 0
          1      > JMP                                                      ->13
    4     2    >   INIT_FCALL                                               'var_dump'
          3        INIT_FCALL                                               'ord'
          4        INIT_FCALL                                               'chr'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $2      
          7        BW_XOR                                           ~3      $2, '%80'
          8        SEND_VAL                                                 ~3
          9        DO_ICALL                                         $4      
         10        SEND_VAR                                                 $4
         11        DO_ICALL                                                 
    3    12        PRE_INC                                                  !0
         13    >   IS_SMALLER_OR_EQUAL                                      !0, 255
         14      > JMPNZ                                                    ~7, ->2
    4    15    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
159.02 ms | 1394 KiB | 19 Q