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<?php class Entity { protected $_properties = []; public function &__get($property) { $value = null; if (isset($this->_properties[$property])) { $value =& $this->_properties[$property]; } return $value; } public function __set($property, $value) { $this->_properties[$property] = $value; } } class CustomIterator extends IteratorIterator { public $callback; public function __construct($items) { $this->callback = function ($a) { $a->foo .= ' world'; return $a; }; parent::__construct($items); } public function current() { $c = $this->callback; return $c(parent::current()); } } $entity = new Entity(); $entity->foo = 'hello'; $it = new CustomIterator(new ArrayIterator([$entity])); $it->rewind(); var_dump($it->current());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/S3fTZ
function name:  (null)
number of ops:  21
compiled vars:  !0 = $entity, !1 = $it
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   43     0  E >   NEW                                                  $2      'Entity'
          1        DO_FCALL                                          0          
          2        ASSIGN                                                       !0, $2
   44     3        ASSIGN_OBJ                                                   !0, 'foo'
          4        OP_DATA                                                      'hello'
   46     5        NEW                                                  $6      'CustomIterator'
          6        NEW                                                  $7      'ArrayIterator'
          7        INIT_ARRAY                                           ~8      !0
          8        SEND_VAL_EX                                                  ~8
          9        DO_FCALL                                          0          
         10        SEND_VAR_NO_REF_EX                                           $7
         11        DO_FCALL                                          0          
         12        ASSIGN                                                       !1, $6
   47    13        INIT_METHOD_CALL                                             !1, 'rewind'
         14        DO_FCALL                                          0          
   48    15        INIT_FCALL                                                   'var_dump'
         16        INIT_METHOD_CALL                                             !1, 'current'
         17        DO_FCALL                                          0  $13     
         18        SEND_VAR                                                     $13
         19        DO_ICALL                                                     
         20      > RETURN                                                       1

Class Entity:
Function __get:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 5, Position 2 = 8
Branch analysis from position: 5
Return found
Branch analysis from position: 8
filename:       /in/S3fTZ
function name:  __get
number of ops:  10
compiled vars:  !0 = $property, !1 = $value
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    9     0  E >   RECV                                                 !0      
   11     1        ASSIGN                                                       !1, null
   12     2        FETCH_OBJ_IS                                         ~3      '_properties'
          3        ISSET_ISEMPTY_DIM_OBJ                             0          ~3, !0
          4      > JMPZ                                                         ~4, ->8
   13     5    >   FETCH_OBJ_W                                          $5      '_properties'
          6        FETCH_DIM_W                                          $6      $5, !0
          7        ASSIGN_REF                                                   !1, $6
   16     8    > > RETURN_BY_REF                                                !1
   17     9*     > RETURN_BY_REF                                                null

End of function __get

Function __set:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/S3fTZ
function name:  __set
number of ops:  6
compiled vars:  !0 = $property, !1 = $value
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   19     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
   21     2        FETCH_OBJ_W                                          $2      '_properties'
          3        ASSIGN_DIM                                                   $2, !0
          4        OP_DATA                                                      !1
   22     5      > RETURN                                                       null

End of function __set

End of class Entity.

Class CustomIterator:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/S3fTZ
function name:  __construct
number of ops:  8
compiled vars:  !0 = $items
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   29     0  E >   RECV                                                 !0      
   30     1        DECLARE_LAMBDA_FUNCTION                              ~2      [0]
          2        ASSIGN_OBJ                                                   'callback'
   33     3        OP_DATA                                                      ~2
   34     4        INIT_STATIC_METHOD_CALL                                      
          5        SEND_VAR_EX                                                  !0
          6        DO_FCALL                                          0          
   35     7      > RETURN                                                       null


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/S3fTZ
function name:  {closure:CustomIterator::__construct():30}
number of ops:  5
compiled vars:  !0 = $a
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   30     0  E >   RECV                                                 !0      
   31     1        ASSIGN_OBJ_OP                                     8          !0, 'foo'
          2        OP_DATA                                                      '+world'
   32     3      > RETURN                                                       !0
   33     4*     > RETURN                                                       null

End of Dynamic Function 0

End of function __construct

Function current:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/S3fTZ
function name:  current
number of ops:  9
compiled vars:  !0 = $c
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   38     0  E >   FETCH_OBJ_R                                          ~1      'callback'
          1        ASSIGN                                                       !0, ~1
   39     2        INIT_DYNAMIC_CALL                                            !0
          3        INIT_STATIC_METHOD_CALL                                      'current'
          4        DO_FCALL                                          0  $3      
          5        SEND_VAR_NO_REF_EX                                           $3
          6        DO_FCALL                                          0  $4      
          7      > RETURN                                                       $4
   40     8*     > RETURN                                                       null

End of function current

End of class CustomIterator.

Generated using Vulcan Logic Dumper, using php 8.5.0


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