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<?php ///on php version < 8.4 class Foo { private $data = null; public function issetData(){ return $this->data !== null; } public function setData($data){ $this->data = $data; } } $foo = new Foo(); var_dump($foo->issetData()); $foo->setData(123); var_dump($foo->issetData());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5eEWn
function name:  (null)
number of ops:  17
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   21     0  E >   NEW                                              $1      'Foo'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   24     3        INIT_FCALL                                               'var_dump'
          4        INIT_METHOD_CALL                                         !0, 'issetData'
          5        DO_FCALL                                      0  $4      
          6        SEND_VAR                                                 $4
          7        DO_ICALL                                                 
   27     8        INIT_METHOD_CALL                                         !0, 'setData'
          9        SEND_VAL_EX                                              123
         10        DO_FCALL                                      0          
   30    11        INIT_FCALL                                               'var_dump'
         12        INIT_METHOD_CALL                                         !0, 'issetData'
         13        DO_FCALL                                      0  $7      
         14        SEND_VAR                                                 $7
         15        DO_ICALL                                                 
         16      > RETURN                                                   1

Class Foo:
Function issetdata:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5eEWn
function name:  issetData
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   FETCH_OBJ_R                                      ~0      'data'
          1        TYPE_CHECK                                  1020  ~1      ~0
          2      > RETURN                                                   ~1
   13     3*     > RETURN                                                   null

End of function issetdata

Function setdata:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5eEWn
function name:  setData
number of ops:  4
compiled vars:  !0 = $data
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   15     0  E >   RECV                                             !0      
   16     1        ASSIGN_OBJ                                               'data'
          2        OP_DATA                                                  !0
   17     3      > RETURN                                                   null

End of function setdata

End of class Foo.

Generated using Vulcan Logic Dumper, using php 8.0.0


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