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<?php unset($_GET["action"]); echo "value: "; var_dump($_GET["action"] ?? NULL); echo "test: "; var_dump($_GET["action"] ?? NULL === "submit"); echo "branch: "; if ($_GET["action"] ?? NULL === "submit") { echo "submit"; } else { echo "not submit"; } echo PHP_EOL; echo PHP_EOL; $_GET["action"] = "submit"; echo "value: "; var_dump($_GET["action"] ?? NULL); echo "test: "; var_dump($_GET["action"] ?? NULL === "submit"); echo "branch: "; if ($_GET["action"] ?? NULL === "submit") { echo "submit"; } else { echo "not submit"; } echo PHP_EOL; echo PHP_EOL; $_GET["action"] = "preview"; echo "value: "; var_dump($_GET["action"] ?? NULL); echo "test: "; var_dump($_GET["action"] ?? NULL === "submit"); echo "branch: "; if ($_GET["action"] ?? NULL === "submit") { echo "submit"; } else { echo "not submit"; } echo PHP_EOL;
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 24, Position 2 = 26
Branch analysis from position: 24
1 jumps found. (Code = 42) Position 1 = 27
Branch analysis from position: 27
2 jumps found. (Code = 43) Position 1 = 54, Position 2 = 56
Branch analysis from position: 54
1 jumps found. (Code = 42) Position 1 = 57
Branch analysis from position: 57
2 jumps found. (Code = 43) Position 1 = 84, Position 2 = 86
Branch analysis from position: 84
1 jumps found. (Code = 42) Position 1 = 87
Branch analysis from position: 87
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 86
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 56
2 jumps found. (Code = 43) Position 1 = 84, Position 2 = 86
Branch analysis from position: 84
Branch analysis from position: 86
Branch analysis from position: 26
2 jumps found. (Code = 43) Position 1 = 54, Position 2 = 56
Branch analysis from position: 54
Branch analysis from position: 56
filename:       /in/ZdB9f
function name:  (null)
number of ops:  89
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   FETCH_UNSET                                      $0      '_GET'
          1        UNSET_DIM                                                $0, 'action'
    5     2        ECHO                                                     'value%3A+++'
          3        INIT_FCALL                                               'var_dump'
          4        FETCH_IS                                         ~1      '_GET'
          5        FETCH_DIM_IS                                     ~2      ~1, 'action'
          6        COALESCE                                         ~3      ~2
          7        QM_ASSIGN                                        ~3      null
          8        SEND_VAL                                                 ~3
          9        DO_ICALL                                                 
    6    10        ECHO                                                     'test%3A++++'
         11        INIT_FCALL                                               'var_dump'
         12        FETCH_IS                                         ~5      '_GET'
         13        FETCH_DIM_IS                                     ~6      ~5, 'action'
         14        COALESCE                                         ~7      ~6
         15        QM_ASSIGN                                        ~7      <false>
         16        SEND_VAL                                                 ~7
         17        DO_ICALL                                                 
    7    18        ECHO                                                     'branch%3A++'
    8    19        FETCH_IS                                         ~9      '_GET'
         20        FETCH_DIM_IS                                     ~10     ~9, 'action'
         21        COALESCE                                         ~11     ~10
         22        QM_ASSIGN                                        ~11     <false>
         23      > JMPZ                                                     ~11, ->26
    9    24    >   ECHO                                                     'submit'
    8    25      > JMP                                                      ->27
   11    26    >   ECHO                                                     'not+submit'
   13    27    >   ECHO                                                     '%0A'
   15    28        ECHO                                                     '%0A'
   17    29        FETCH_W                      global              $12     '_GET'
         30        ASSIGN_DIM                                               $12, 'action'
         31        OP_DATA                                                  'submit'
   19    32        ECHO                                                     'value%3A+++'
         33        INIT_FCALL                                               'var_dump'
         34        FETCH_IS                                         ~14     '_GET'
         35        FETCH_DIM_IS                                     ~15     ~14, 'action'
         36        COALESCE                                         ~16     ~15
         37        QM_ASSIGN                                        ~16     null
         38        SEND_VAL                                                 ~16
         39        DO_ICALL                                                 
   20    40        ECHO                                                     'test%3A++++'
         41        INIT_FCALL                                               'var_dump'
         42        FETCH_IS                                         ~18     '_GET'
         43        FETCH_DIM_IS                                     ~19     ~18, 'action'
         44        COALESCE                                         ~20     ~19
         45        QM_ASSIGN                                        ~20     <false>
         46        SEND_VAL                                                 ~20
         47        DO_ICALL                                                 
   21    48        ECHO                                                     'branch%3A++'
   22    49        FETCH_IS                                         ~22     '_GET'
         50        FETCH_DIM_IS                                     ~23     ~22, 'action'
         51        COALESCE                                         ~24     ~23
         52        QM_ASSIGN                                        ~24     <false>
         53      > JMPZ                                                     ~24, ->56
   23    54    >   ECHO                                                     'submit'
   22    55      > JMP                                                      ->57
   25    56    >   ECHO                                                     'not+submit'
   27    57    >   ECHO                                                     '%0A'
   29    58        ECHO                                                     '%0A'
   31    59        FETCH_W                      global              $25     '_GET'
         60        ASSIGN_DIM                                               $25, 'action'
         61        OP_DATA                                                  'preview'
   33    62        ECHO                                                     'value%3A+++'
         63        INIT_FCALL                                               'var_dump'
         64        FETCH_IS                                         ~27     '_GET'
         65        FETCH_DIM_IS                                     ~28     ~27, 'action'
         66        COALESCE                                         ~29     ~28
         67        QM_ASSIGN                                        ~29     null
         68        SEND_VAL                                                 ~29
         69        DO_ICALL                                                 
   34    70        ECHO                                                     'test%3A++++'
         71        INIT_FCALL                                               'var_dump'
         72        FETCH_IS                                         ~31     '_GET'
         73        FETCH_DIM_IS                                     ~32     ~31, 'action'
         74        COALESCE                                         ~33     ~32
         75        QM_ASSIGN                                        ~33     <false>
         76        SEND_VAL                                                 ~33
         77        DO_ICALL                                                 
   35    78        ECHO                                                     'branch%3A++'
   36    79        FETCH_IS                                         ~35     '_GET'
         80        FETCH_DIM_IS                                     ~36     ~35, 'action'
         81        COALESCE                                         ~37     ~36
         82        QM_ASSIGN                                        ~37     <false>
         83      > JMPZ                                                     ~37, ->86
   37    84    >   ECHO                                                     'submit'
   36    85      > JMP                                                      ->87
   39    86    >   ECHO                                                     'not+submit'
   41    87    >   ECHO                                                     '%0A'
         88      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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136.58 ms | 1007 KiB | 14 Q