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<?php $null = null; echo 'var_export(): ' . var_export($null, true); echo "\n"; echo 'var_dump(): ' . (function($v){ ob_start(); var_dump($v); return ob_get_clean(); })($null); //echo "\n"; echo 'print_r(): ' . print_r($null, true); echo "\n"; echo 'json_encode(): ' . json_encode($null); echo "\n"; echo 'serialize(): ' . serialize($null); echo "\n"; echo 'strval(): ' . strval($null); echo "\n"; echo 'gettype(): ' . gettype($null); echo "\n"; echo 'null coalesce: ' . ($null ?? 'null'); echo "\n"; echo 'ternary: ' . ($null === null ? 'null' : $null); echo "\n"; echo 'condition: ' . (function($v) { if ($v === null) { return 'null'; }})($null);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 48, Position 2 = 50
Branch analysis from position: 48
1 jumps found. (Code = 42) Position 1 = 51
Branch analysis from position: 51
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 50
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vWVSW
function name:  (null)
number of ops:  61
compiled vars:  !0 = $null
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, null
    5     1        INIT_FCALL                                               'var_export'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 <true>
          4        DO_ICALL                                         $2      
          5        CONCAT                                           ~3      'var_export%28%29%3A+', $2
          6        ECHO                                                     ~3
    7     7        ECHO                                                     '%0A'
    9     8        DECLARE_LAMBDA_FUNCTION                          ~4      [0]
          9        INIT_DYNAMIC_CALL                                        ~4
         10        SEND_VAR_EX                                              !0
         11        DO_FCALL                                      0  $5      
         12        CONCAT                                           ~6      'var_dump%28%29%3A+', $5
         13        ECHO                                                     ~6
   13    14        INIT_FCALL                                               'print_r'
         15        SEND_VAR                                                 !0
         16        SEND_VAL                                                 <true>
         17        DO_ICALL                                         $7      
         18        CONCAT                                           ~8      'print_r%28%29%3A+', $7
         19        ECHO                                                     ~8
   15    20        ECHO                                                     '%0A'
   17    21        INIT_FCALL                                               'json_encode'
         22        SEND_VAR                                                 !0
         23        DO_ICALL                                         $9      
         24        CONCAT                                           ~10     'json_encode%28%29%3A+', $9
         25        ECHO                                                     ~10
   19    26        ECHO                                                     '%0A'
   21    27        INIT_FCALL                                               'serialize'
         28        SEND_VAR                                                 !0
         29        DO_ICALL                                         $11     
         30        CONCAT                                           ~12     'serialize%28%29%3A+', $11
         31        ECHO                                                     ~12
   23    32        ECHO                                                     '%0A'
   25    33        CAST                                          6  ~13     !0
         34        CONCAT                                           ~14     'strval%28%29%3A+', ~13
         35        ECHO                                                     ~14
   27    36        ECHO                                                     '%0A'
   29    37        GET_TYPE                                         ~15     !0
         38        CONCAT                                           ~16     'gettype%28%29%3A+', ~15
         39        ECHO                                                     ~16
   31    40        ECHO                                                     '%0A'
   33    41        COALESCE                                         ~17     !0
         42        QM_ASSIGN                                        ~17     'null'
         43        CONCAT                                           ~18     'null+coalesce%3A+', ~17
         44        ECHO                                                     ~18
   35    45        ECHO                                                     '%0A'
   37    46        TYPE_CHECK                                    2          !0
         47      > JMPZ                                                     ~19, ->50
         48    >   QM_ASSIGN                                        ~20     'null'
         49      > JMP                                                      ->51
         50    >   QM_ASSIGN                                        ~20     !0
         51    >   CONCAT                                           ~21     'ternary%3A+', ~20
         52        ECHO                                                     ~21
   39    53        ECHO                                                     '%0A'
   41    54        DECLARE_LAMBDA_FUNCTION                          ~22     [1]
         55        INIT_DYNAMIC_CALL                                        ~22
         56        SEND_VAR_EX                                              !0
         57        DO_FCALL                                      0  $23     
         58        CONCAT                                           ~24     'condition%3A+', $23
         59        ECHO                                                     ~24
         60      > RETURN                                                   1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vWVSW
function name:  {closure}
number of ops:  10
compiled vars:  !0 = $v
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   RECV                                             !0      
          1        INIT_FCALL                                               'ob_start'
          2        DO_ICALL                                                 
          3        INIT_FCALL                                               'var_dump'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                                 
          6        INIT_FCALL                                               'ob_get_clean'
          7        DO_ICALL                                         $3      
          8      > RETURN                                                   $3
          9*     > RETURN                                                   null

End of Dynamic Function 0

Dynamic Function 1
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 4
Branch analysis from position: 3
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vWVSW
function name:  {closure}
number of ops:  5
compiled vars:  !0 = $v
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   41     0  E >   RECV                                             !0      
          1        TYPE_CHECK                                    2          !0
          2      > JMPZ                                                     ~1, ->4
          3    > > RETURN                                                   'null'
          4    > > RETURN                                                   null

End of Dynamic Function 1

Generated using Vulcan Logic Dumper, using php 8.0.0


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