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<?php class Test { public $define; // null public $redefine; // null public function define(?bool $something = null): ?bool { return $this->define = $this->define ?? $something; } public function redefine(?bool $something = null): ?bool { return $this->redefine = $something ?? $this->redefine; } } $test = function(?bool $value) { var_export($value ?? 'Not set!' ?: 'False!'); echo PHP_EOL; }; $foo = new Test(); $test($foo->define()); $test($foo->define(true)); $test($foo->define()); $test($foo->define(false)); $test($foo->define()); $test($foo->redefine()); $test($foo->redefine(true)); $test($foo->redefine()); $test($foo->redefine(false)); $test($foo->redefine());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/PFXqi
function name:  (null)
number of ops:  60
compiled vars:  !0 = $test, !1 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   16     0  E >   DECLARE_LAMBDA_FUNCTION                          ~2      [0]
          1        ASSIGN                                                   !0, ~2
   21     2        NEW                                              $4      'Test'
          3        DO_FCALL                                      0          
          4        ASSIGN                                                   !1, $4
   23     5        INIT_DYNAMIC_CALL                                        !0
          6        INIT_METHOD_CALL                                         !1, 'define'
          7        DO_FCALL                                      0  $7      
          8        SEND_VAR_NO_REF_EX                                       $7
          9        DO_FCALL                                      0          
   24    10        INIT_DYNAMIC_CALL                                        !0
         11        INIT_METHOD_CALL                                         !1, 'define'
         12        SEND_VAL_EX                                              <true>
         13        DO_FCALL                                      0  $9      
         14        SEND_VAR_NO_REF_EX                                       $9
         15        DO_FCALL                                      0          
   25    16        INIT_DYNAMIC_CALL                                        !0
         17        INIT_METHOD_CALL                                         !1, 'define'
         18        DO_FCALL                                      0  $11     
         19        SEND_VAR_NO_REF_EX                                       $11
         20        DO_FCALL                                      0          
   26    21        INIT_DYNAMIC_CALL                                        !0
         22        INIT_METHOD_CALL                                         !1, 'define'
         23        SEND_VAL_EX                                              <false>
         24        DO_FCALL                                      0  $13     
         25        SEND_VAR_NO_REF_EX                                       $13
         26        DO_FCALL                                      0          
   27    27        INIT_DYNAMIC_CALL                                        !0
         28        INIT_METHOD_CALL                                         !1, 'define'
         29        DO_FCALL                                      0  $15     
         30        SEND_VAR_NO_REF_EX                                       $15
         31        DO_FCALL                                      0          
   29    32        INIT_DYNAMIC_CALL                                        !0
         33        INIT_METHOD_CALL                                         !1, 'redefine'
         34        DO_FCALL                                      0  $17     
         35        SEND_VAR_NO_REF_EX                                       $17
         36        DO_FCALL                                      0          
   30    37        INIT_DYNAMIC_CALL                                        !0
         38        INIT_METHOD_CALL                                         !1, 'redefine'
         39        SEND_VAL_EX                                              <true>
         40        DO_FCALL                                      0  $19     
         41        SEND_VAR_NO_REF_EX                                       $19
         42        DO_FCALL                                      0          
   31    43        INIT_DYNAMIC_CALL                                        !0
         44        INIT_METHOD_CALL                                         !1, 'redefine'
         45        DO_FCALL                                      0  $21     
         46        SEND_VAR_NO_REF_EX                                       $21
         47        DO_FCALL                                      0          
   32    48        INIT_DYNAMIC_CALL                                        !0
         49        INIT_METHOD_CALL                                         !1, 'redefine'
         50        SEND_VAL_EX                                              <false>
         51        DO_FCALL                                      0  $23     
         52        SEND_VAR_NO_REF_EX                                       $23
         53        DO_FCALL                                      0          
   33    54        INIT_DYNAMIC_CALL                                        !0
         55        INIT_METHOD_CALL                                         !1, 'redefine'
         56        DO_FCALL                                      0  $25     
         57        SEND_VAR_NO_REF_EX                                       $25
         58        DO_FCALL                                      0          
         59      > 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/PFXqi
function name:  {closure}
number of ops:  10
compiled vars:  !0 = $value
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   16     0  E >   RECV                                             !0      
   17     1        INIT_FCALL                                               'var_export'
          2        COALESCE                                         ~1      !0
          3        QM_ASSIGN                                        ~1      'Not+set%21'
          4        JMP_SET                                          ~2      ~1, ->6
          5        QM_ASSIGN                                        ~2      'False%21'
          6        SEND_VAL                                                 ~2
          7        DO_ICALL                                                 
   18     8        ECHO                                                     '%0A'
   19     9      > RETURN                                                   null

End of Dynamic Function 0

Class Test:
Function define:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/PFXqi
function name:  define
number of ops:  10
compiled vars:  !0 = $something
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   RECV_INIT                                        !0      null
    8     1        FETCH_OBJ_IS                                     ~2      'define'
          2        COALESCE                                         ~3      ~2
          3        QM_ASSIGN                                        ~3      !0
          4        ASSIGN_OBJ                                       ~1      'define'
          5        OP_DATA                                                  ~3
          6        VERIFY_RETURN_TYPE                                       ~1
          7      > RETURN                                                   ~1
    9     8*       VERIFY_RETURN_TYPE                                       
          9*     > RETURN                                                   null

End of function define

Function redefine:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/PFXqi
function name:  redefine
number of ops:  10
compiled vars:  !0 = $something
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   RECV_INIT                                        !0      null
   12     1        COALESCE                                         ~2      !0
          2        FETCH_OBJ_R                                      ~3      'redefine'
          3        QM_ASSIGN                                        ~2      ~3
          4        ASSIGN_OBJ                                       ~1      'redefine'
          5        OP_DATA                                                  ~2
          6        VERIFY_RETURN_TYPE                                       ~1
          7      > RETURN                                                   ~1
   13     8*       VERIFY_RETURN_TYPE                                       
          9*     > RETURN                                                   null

End of function redefine

End of class Test.

Generated using Vulcan Logic Dumper, using php 8.0.0


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