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<?php class myClass { private $var = null; function __construct() { $this->var = "Hello"; } public function func() { $this->var = null; var_dump($this->var);// Does nothing, still "Hello" unset($this->var); var_dump($this->var);// Does nothing, still "Hello" $this->var = false; var_dump($this->var);// Works and prints "Hello" } } $c = new myClass; $c->func();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/POdHF
function name:  (null)
number of ops:  6
compiled vars:  !0 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   21     0  E >   NEW                                              $1      'myClass'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   22     3        INIT_METHOD_CALL                                         !0, 'func'
          4        DO_FCALL                                      0          
          5      > RETURN                                                   1

Class myClass:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/POdHF
function name:  __construct
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   ASSIGN_OBJ                                               'var'
          1        OP_DATA                                                  'Hello'
    8     2      > RETURN                                                   null

End of function __construct

Function func:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/POdHF
function name:  func
number of ops:  18
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   ASSIGN_OBJ                                               'var'
          1        OP_DATA                                                  null
   13     2        INIT_FCALL                                               'var_dump'
          3        FETCH_OBJ_R                                      ~1      'var'
          4        SEND_VAL                                                 ~1
          5        DO_ICALL                                                 
   14     6        UNSET_OBJ                                                'var'
   15     7        INIT_FCALL                                               'var_dump'
          8        FETCH_OBJ_R                                      ~3      'var'
          9        SEND_VAL                                                 ~3
         10        DO_ICALL                                                 
   16    11        ASSIGN_OBJ                                               'var'
         12        OP_DATA                                                  <false>
   17    13        INIT_FCALL                                               'var_dump'
         14        FETCH_OBJ_R                                      ~6      'var'
         15        SEND_VAL                                                 ~6
         16        DO_ICALL                                                 
   18    17      > RETURN                                                   null

End of function func

End of class myClass.

Generated using Vulcan Logic Dumper, using php 8.0.0


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