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<?php define('INT_SIGNED', 1); define('INT_LE', 2); function is32Bit() { $test = unpack('N', "\xFF\xFF\xFF\xFF"); return current($test) === -1; } function unpack_int32($str, $flags = 0) { $length = strlen($str); if ($length < 4) { return false; } else if ($length > 4) { $str = substr($str, 0, 4); } if ($flags & INT_LE) { $str = strrev($str); } $result = unpack('N', $str); $result = current($result); $signBit = (bool) ($result & 0x80000000); $isSigned = (bool) ($flags & INT_SIGNED); $is32bit = is32Bit(); if ($signBit && $isSigned && !$is32bit) { $result = (0x00000000FFFFFFFF << 32) | $result; } else if ($signBit && !$isSigned && $is32bit) { $result = (($result & 0x7FFFFFFF) * 2) + ~$result + 1; } return $result; } function unpack_int64($str, $flags = 0) { $length = strlen($str); if ($length < 8) { return false; } else if ($length > 8) { $str = substr($str, 0, 8); } if ($flags & INT_LE) { $str = strrev($str); } $longs = array_values(unpack('N*', $str)); var_dump($longs); $signBit = (bool) ($longs[0] & 0x80000000); $isSigned = (bool) ($flags & INT_SIGNED); if (is32Bit()) { $longs[1] = (($longs[1] & 0x7FFFFFFF) * 2) + ~$longs[1] + 1; $result = ($longs[0] * pow(2, 32)) + $longs[1]; } else { $result = ($longs[0] << 32) | $longs[1]; if ($signBit && !$isSigned) { $result = (($result & 0x7FFFFFFFFFFFFFFe) * 2) + ~$result + 1; } } return $result; } printf('%f', unpack_int64("\x00\x00\x00\x07\xFF\xFF\xFF\xFF"));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KnC7p
function name:  (null)
number of ops:  16
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'define'
          1        SEND_VAL                                                 'INT_SIGNED'
          2        SEND_VAL                                                 1
          3        DO_ICALL                                                 
    4     4        INIT_FCALL                                               'define'
          5        SEND_VAL                                                 'INT_LE'
          6        SEND_VAL                                                 2
          7        DO_ICALL                                                 
   68     8        INIT_FCALL                                               'printf'
          9        SEND_VAL                                                 '%25f'
         10        INIT_FCALL                                               'unpack_int64'
         11        SEND_VAL                                                 '%00%00%00%07%FF%FF%FF%FF'
         12        DO_FCALL                                      0  $2      
         13        SEND_VAR                                                 $2
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Function is32bit:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KnC7p
function name:  is32Bit
number of ops:  11
compiled vars:  !0 = $test
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   INIT_FCALL                                               'unpack'
          1        SEND_VAL                                                 'N'
          2        SEND_VAL                                                 '%FF%FF%FF%FF'
          3        DO_ICALL                                         $1      
          4        ASSIGN                                                   !0, $1
    8     5        INIT_FCALL                                               'current'
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                         $3      
          8        IS_IDENTICAL                                     ~4      $3, -1
          9      > RETURN                                                   ~4
    9    10*     > RETURN                                                   null

End of function is32bit

Function unpack_int32:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
2 jumps found. (Code = 43) Position 1 = 10, Position 2 = 16
Branch analysis from position: 10
2 jumps found. (Code = 43) Position 1 = 19, Position 2 = 23
Branch analysis from position: 19
2 jumps found. (Code = 46) Position 1 = 43, Position 2 = 44
Branch analysis from position: 43
2 jumps found. (Code = 46) Position 1 = 45, Position 2 = 47
Branch analysis from position: 45
2 jumps found. (Code = 43) Position 1 = 48, Position 2 = 51
Branch analysis from position: 48
1 jumps found. (Code = 42) Position 1 = 63
Branch analysis from position: 63
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 51
2 jumps found. (Code = 46) Position 1 = 52, Position 2 = 54
Branch analysis from position: 52
2 jumps found. (Code = 46) Position 1 = 55, Position 2 = 56
Branch analysis from position: 55
2 jumps found. (Code = 43) Position 1 = 57, Position 2 = 63
Branch analysis from position: 57
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 63
Branch analysis from position: 56
Branch analysis from position: 54
Branch analysis from position: 47
Branch analysis from position: 44
Branch analysis from position: 23
Branch analysis from position: 16
filename:       /in/KnC7p
function name:  unpack_int32
number of ops:  65
compiled vars:  !0 = $str, !1 = $flags, !2 = $length, !3 = $result, !4 = $signBit, !5 = $isSigned, !6 = $is32bit
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   RECV                                             !0      
          1        RECV_INIT                                        !1      0
   12     2        STRLEN                                           ~7      !0
          3        ASSIGN                                                   !2, ~7
   13     4        IS_SMALLER                                               !2, 4
          5      > JMPZ                                                     ~9, ->8
   14     6    > > RETURN                                                   <false>
          7*       JMP                                                      ->16
   15     8    >   IS_SMALLER                                               4, !2
          9      > JMPZ                                                     ~10, ->16
   16    10    >   INIT_FCALL                                               'substr'
         11        SEND_VAR                                                 !0
         12        SEND_VAL                                                 0
         13        SEND_VAL                                                 4
         14        DO_ICALL                                         $11     
         15        ASSIGN                                                   !0, $11
   19    16    >   FETCH_CONSTANT                                   ~13     'INT_LE'
         17        BW_AND                                           ~14     !1, ~13
         18      > JMPZ                                                     ~14, ->23
   20    19    >   INIT_FCALL                                               'strrev'
         20        SEND_VAR                                                 !0
         21        DO_ICALL                                         $15     
         22        ASSIGN                                                   !0, $15
   22    23    >   INIT_FCALL                                               'unpack'
         24        SEND_VAL                                                 'N'
         25        SEND_VAR                                                 !0
         26        DO_ICALL                                         $17     
         27        ASSIGN                                                   !3, $17
   23    28        INIT_FCALL                                               'current'
         29        SEND_VAR                                                 !3
         30        DO_ICALL                                         $19     
         31        ASSIGN                                                   !3, $19
   25    32        BW_AND                                           ~21     !3, 2147483648
         33        BOOL                                             ~22     ~21
         34        ASSIGN                                                   !4, ~22
   26    35        FETCH_CONSTANT                                   ~24     'INT_SIGNED'
         36        BW_AND                                           ~25     !1, ~24
         37        BOOL                                             ~26     ~25
         38        ASSIGN                                                   !5, ~26
   27    39        INIT_FCALL                                               'is32bit'
         40        DO_FCALL                                      0  $28     
         41        ASSIGN                                                   !6, $28
   29    42      > JMPZ_EX                                          ~30     !4, ->44
         43    >   BOOL                                             ~30     !5
         44    > > JMPZ_EX                                          ~30     ~30, ->47
         45    >   BOOL_NOT                                         ~31     !6
         46        BOOL                                             ~30     ~31
         47    > > JMPZ                                                     ~30, ->51
   30    48    >   BW_OR                                            ~32     !3, -4294967296
         49        ASSIGN                                                   !3, ~32
         50      > JMP                                                      ->63
   31    51    > > JMPZ_EX                                          ~34     !4, ->54
         52    >   BOOL_NOT                                         ~35     !5
         53        BOOL                                             ~34     ~35
         54    > > JMPZ_EX                                          ~34     ~34, ->56
         55    >   BOOL                                             ~34     !6
         56    > > JMPZ                                                     ~34, ->63
   32    57    >   BW_AND                                           ~36     !3, 2147483647
         58        MUL                                              ~37     ~36, 2
         59        BW_NOT                                           ~38     !3
         60        ADD                                              ~39     ~37, ~38
         61        ADD                                              ~40     ~39, 1
         62        ASSIGN                                                   !3, ~40
   35    63    > > RETURN                                                   !3
   36    64*     > RETURN                                                   null

End of function unpack_int32

Function unpack_int64:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
2 jumps found. (Code = 43) Position 1 = 10, Position 2 = 16
Branch analysis from position: 10
2 jumps found. (Code = 43) Position 1 = 19, Position 2 = 23
Branch analysis from position: 19
2 jumps found. (Code = 43) Position 1 = 45, Position 2 = 64
Branch analysis from position: 45
1 jumps found. (Code = 42) Position 1 = 79
Branch analysis from position: 79
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 64
2 jumps found. (Code = 46) Position 1 = 70, Position 2 = 72
Branch analysis from position: 70
2 jumps found. (Code = 43) Position 1 = 73, Position 2 = 79
Branch analysis from position: 73
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 79
Branch analysis from position: 72
Branch analysis from position: 23
Branch analysis from position: 16
filename:       /in/KnC7p
function name:  unpack_int64
number of ops:  81
compiled vars:  !0 = $str, !1 = $flags, !2 = $length, !3 = $longs, !4 = $signBit, !5 = $isSigned, !6 = $result
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   38     0  E >   RECV                                             !0      
          1        RECV_INIT                                        !1      0
   39     2        STRLEN                                           ~7      !0
          3        ASSIGN                                                   !2, ~7
   40     4        IS_SMALLER                                               !2, 8
          5      > JMPZ                                                     ~9, ->8
   41     6    > > RETURN                                                   <false>
          7*       JMP                                                      ->16
   42     8    >   IS_SMALLER                                               8, !2
          9      > JMPZ                                                     ~10, ->16
   43    10    >   INIT_FCALL                                               'substr'
         11        SEND_VAR                                                 !0
         12        SEND_VAL                                                 0
         13        SEND_VAL                                                 8
         14        DO_ICALL                                         $11     
         15        ASSIGN                                                   !0, $11
   46    16    >   FETCH_CONSTANT                                   ~13     'INT_LE'
         17        BW_AND                                           ~14     !1, ~13
         18      > JMPZ                                                     ~14, ->23
   47    19    >   INIT_FCALL                                               'strrev'
         20        SEND_VAR                                                 !0
         21        DO_ICALL                                         $15     
         22        ASSIGN                                                   !0, $15
   49    23    >   INIT_FCALL                                               'array_values'
         24        INIT_FCALL                                               'unpack'
         25        SEND_VAL                                                 'N%2A'
         26        SEND_VAR                                                 !0
         27        DO_ICALL                                         $17     
         28        SEND_VAR                                                 $17
         29        DO_ICALL                                         $18     
         30        ASSIGN                                                   !3, $18
   50    31        INIT_FCALL                                               'var_dump'
         32        SEND_VAR                                                 !3
         33        DO_ICALL                                                 
   52    34        FETCH_DIM_R                                      ~21     !3, 0
         35        BW_AND                                           ~22     ~21, 2147483648
         36        BOOL                                             ~23     ~22
         37        ASSIGN                                                   !4, ~23
   53    38        FETCH_CONSTANT                                   ~25     'INT_SIGNED'
         39        BW_AND                                           ~26     !1, ~25
         40        BOOL                                             ~27     ~26
         41        ASSIGN                                                   !5, ~27
   55    42        INIT_FCALL                                               'is32bit'
         43        DO_FCALL                                      0  $29     
         44      > JMPZ                                                     $29, ->64
   56    45    >   FETCH_DIM_R                                      ~31     !3, 1
         46        BW_AND                                           ~32     ~31, 2147483647
         47        MUL                                              ~33     ~32, 2
         48        FETCH_DIM_R                                      ~34     !3, 1
         49        BW_NOT                                           ~35     ~34
         50        ADD                                              ~36     ~33, ~35
         51        ADD                                              ~37     ~36, 1
         52        ASSIGN_DIM                                               !3, 1
         53        OP_DATA                                                  ~37
   57    54        FETCH_DIM_R                                      ~38     !3, 0
         55        INIT_FCALL                                               'pow'
         56        SEND_VAL                                                 2
         57        SEND_VAL                                                 32
         58        DO_ICALL                                         $39     
         59        MUL                                              ~40     $39, ~38
         60        FETCH_DIM_R                                      ~41     !3, 1
         61        ADD                                              ~42     ~40, ~41
         62        ASSIGN                                                   !6, ~42
         63      > JMP                                                      ->79
   59    64    >   FETCH_DIM_R                                      ~44     !3, 0
         65        SL                                               ~45     ~44, 32
         66        FETCH_DIM_R                                      ~46     !3, 1
         67        BW_OR                                            ~47     ~45, ~46
         68        ASSIGN                                                   !6, ~47
   60    69      > JMPZ_EX                                          ~49     !4, ->72
         70    >   BOOL_NOT                                         ~50     !5
         71        BOOL                                             ~49     ~50
         72    > > JMPZ                                                     ~49, ->79
   61    73    >   BW_AND                                           ~51     !6, 9223372036854775806
         74        MUL                                              ~52     ~51, 2
         75        BW_NOT                                           ~53     !6
         76        ADD                                              ~54     ~52, ~53
         77        ADD                                              ~55     ~54, 1
         78        ASSIGN                                                   !6, ~55
   65    79    > > RETURN                                                   !6
   66    80*     > RETURN                                                   null

End of function unpack_int64

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
158.49 ms | 1406 KiB | 34 Q