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<?php $availablePieces = []; $bitfield = hex2bin('ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe0'); $bytes = unpack('N', $bitfield)[1]; foreach (str_split($bytes) as $index => $byte) { $availablePieces[($index * 8) + 0] = $byte & 0b10000000 !== 0; $availablePieces[($index * 8) + 1] = $byte & 0b01000000 !== 0; $availablePieces[($index * 8) + 2] = $byte & 0b00100000 !== 0; $availablePieces[($index * 8) + 3] = $byte & 0b00010000 !== 0; $availablePieces[($index * 8) + 4] = $byte & 0b00001000 !== 0; $availablePieces[($index * 8) + 5] = $byte & 0b00000100 !== 0; $availablePieces[($index * 8) + 6] = $byte & 0b00000010 !== 0; $availablePieces[($index * 8) + 7] = $byte & 0b00000001 !== 0; } var_dump($availablePieces);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 15, Position 2 = 58
Branch analysis from position: 15
2 jumps found. (Code = 78) Position 1 = 16, Position 2 = 58
Branch analysis from position: 16
1 jumps found. (Code = 42) Position 1 = 15
Branch analysis from position: 15
Branch analysis from position: 58
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 58
filename:       /in/ZU8bK
function name:  (null)
number of ops:  63
compiled vars:  !0 = $availablePieces, !1 = $bitfield, !2 = $bytes, !3 = $byte, !4 = $index
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'hex2bin'
          2        SEND_VAL                                                 'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe0'
          3        DO_ICALL                                         $6      
          4        ASSIGN                                                   !1, $6
    7     5        INIT_FCALL                                               'unpack'
          6        SEND_VAL                                                 'N'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                         $8      
          9        FETCH_DIM_R                                      ~9      $8, 1
         10        ASSIGN                                                   !2, ~9
    9    11        INIT_FCALL                                               'str_split'
         12        SEND_VAR                                                 !2
         13        DO_ICALL                                         $11     
         14      > FE_RESET_R                                       $12     $11, ->58
         15    > > FE_FETCH_R                                       ~13     $12, !3, ->58
         16    >   ASSIGN                                                   !4, ~13
   10    17        MUL                                              ~15     !4, 8
         18        ADD                                              ~16     ~15, 0
         19        BW_AND                                           ~18     !3, <true>
         20        ASSIGN_DIM                                               !0, ~16
         21        OP_DATA                                                  ~18
   11    22        MUL                                              ~19     !4, 8
         23        ADD                                              ~20     ~19, 1
         24        BW_AND                                           ~22     !3, <true>
         25        ASSIGN_DIM                                               !0, ~20
         26        OP_DATA                                                  ~22
   12    27        MUL                                              ~23     !4, 8
         28        ADD                                              ~24     ~23, 2
         29        BW_AND                                           ~26     !3, <true>
         30        ASSIGN_DIM                                               !0, ~24
         31        OP_DATA                                                  ~26
   13    32        MUL                                              ~27     !4, 8
         33        ADD                                              ~28     ~27, 3
         34        BW_AND                                           ~30     !3, <true>
         35        ASSIGN_DIM                                               !0, ~28
         36        OP_DATA                                                  ~30
   14    37        MUL                                              ~31     !4, 8
         38        ADD                                              ~32     ~31, 4
         39        BW_AND                                           ~34     !3, <true>
         40        ASSIGN_DIM                                               !0, ~32
         41        OP_DATA                                                  ~34
   15    42        MUL                                              ~35     !4, 8
         43        ADD                                              ~36     ~35, 5
         44        BW_AND                                           ~38     !3, <true>
         45        ASSIGN_DIM                                               !0, ~36
         46        OP_DATA                                                  ~38
   16    47        MUL                                              ~39     !4, 8
         48        ADD                                              ~40     ~39, 6
         49        BW_AND                                           ~42     !3, <true>
         50        ASSIGN_DIM                                               !0, ~40
         51        OP_DATA                                                  ~42
   17    52        MUL                                              ~43     !4, 8
         53        ADD                                              ~44     ~43, 7
         54        BW_AND                                           ~46     !3, <true>
         55        ASSIGN_DIM                                               !0, ~44
         56        OP_DATA                                                  ~46
    9    57      > JMP                                                      ->15
         58    >   FE_FREE                                                  $12
   20    59        INIT_FCALL                                               'var_dump'
         60        SEND_VAR                                                 !0
         61        DO_ICALL                                                 
         62      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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176.79 ms | 1405 KiB | 21 Q