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<?php function compareVersion($version1, $version2) { $partsV1 = explode('.', $version1); $partsV2 = explode('.', $version2); $partsV1Size = count($partsV1); $partsV2Size = count($partsV2); $longest = max($partsV1Size, $partsV2Size); for ($i = 0; $i < $longest; ++$i) { $v1 = $partsV1Size > i ? intval($partsV1[$i]) : 0; $v2 = $partsV1Size > i ? intval($partsV2[$i]) : 0; if ($v1 < $v2) { return -1; } else if ($v1 > $v2) { return 1; } } return 0; } var_dump(compareVersion("01.0", "1"));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/IHAUn
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   21     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'compareversion'
          2        SEND_VAL                                                 '01.0'
          3        SEND_VAL                                                 '1'
          4        DO_FCALL                                      0  $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Function compareversion:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 49
Branch analysis from position: 49
2 jumps found. (Code = 44) Position 1 = 51, Position 2 = 23
Branch analysis from position: 51
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 23
2 jumps found. (Code = 43) Position 1 = 26, Position 2 = 30
Branch analysis from position: 26
1 jumps found. (Code = 42) Position 1 = 31
Branch analysis from position: 31
2 jumps found. (Code = 43) Position 1 = 35, Position 2 = 39
Branch analysis from position: 35
1 jumps found. (Code = 42) Position 1 = 40
Branch analysis from position: 40
2 jumps found. (Code = 43) Position 1 = 43, Position 2 = 45
Branch analysis from position: 43
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 45
2 jumps found. (Code = 43) Position 1 = 47, Position 2 = 48
Branch analysis from position: 47
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 48
2 jumps found. (Code = 44) Position 1 = 51, Position 2 = 23
Branch analysis from position: 51
Branch analysis from position: 23
Branch analysis from position: 39
2 jumps found. (Code = 43) Position 1 = 43, Position 2 = 45
Branch analysis from position: 43
Branch analysis from position: 45
Branch analysis from position: 30
2 jumps found. (Code = 43) Position 1 = 35, Position 2 = 39
Branch analysis from position: 35
Branch analysis from position: 39
filename:       /in/IHAUn
function name:  compareVersion
number of ops:  53
compiled vars:  !0 = $version1, !1 = $version2, !2 = $partsV1, !3 = $partsV2, !4 = $partsV1Size, !5 = $partsV2Size, !6 = $longest, !7 = $i, !8 = $v1, !9 = $v2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    4     2        INIT_FCALL                                               'explode'
          3        SEND_VAL                                                 '.'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $10     
          6        ASSIGN                                                   !2, $10
    5     7        INIT_FCALL                                               'explode'
          8        SEND_VAL                                                 '.'
          9        SEND_VAR                                                 !1
         10        DO_ICALL                                         $12     
         11        ASSIGN                                                   !3, $12
    6    12        COUNT                                            ~14     !2
         13        ASSIGN                                                   !4, ~14
    7    14        COUNT                                            ~16     !3
         15        ASSIGN                                                   !5, ~16
    8    16        INIT_FCALL                                               'max'
         17        SEND_VAR                                                 !4
         18        SEND_VAR                                                 !5
         19        DO_ICALL                                         $18     
         20        ASSIGN                                                   !6, $18
    9    21        ASSIGN                                                   !7, 0
         22      > JMP                                                      ->49
   10    23    >   FETCH_CONSTANT                                   ~21     'i'
         24        IS_SMALLER                                               ~21, !4
         25      > JMPZ                                                     ~22, ->30
         26    >   FETCH_DIM_R                                      ~23     !2, !7
         27        CAST                                          4  ~24     ~23
         28        QM_ASSIGN                                        ~25     ~24
         29      > JMP                                                      ->31
         30    >   QM_ASSIGN                                        ~25     0
         31    >   ASSIGN                                                   !8, ~25
   11    32        FETCH_CONSTANT                                   ~27     'i'
         33        IS_SMALLER                                               ~27, !4
         34      > JMPZ                                                     ~28, ->39
         35    >   FETCH_DIM_R                                      ~29     !3, !7
         36        CAST                                          4  ~30     ~29
         37        QM_ASSIGN                                        ~31     ~30
         38      > JMP                                                      ->40
         39    >   QM_ASSIGN                                        ~31     0
         40    >   ASSIGN                                                   !9, ~31
   12    41        IS_SMALLER                                               !8, !9
         42      > JMPZ                                                     ~33, ->45
   13    43    > > RETURN                                                   -1
         44*       JMP                                                      ->48
   14    45    >   IS_SMALLER                                               !9, !8
         46      > JMPZ                                                     ~34, ->48
   15    47    > > RETURN                                                   1
    9    48    >   PRE_INC                                                  !7
         49    >   IS_SMALLER                                               !7, !6
         50      > JMPNZ                                                    ~36, ->23
   18    51    > > RETURN                                                   0
   19    52*     > RETURN                                                   null

End of function compareversion

Generated using Vulcan Logic Dumper, using php 8.0.0


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