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<?php class A { public function foo() { var_dump($this); } } class B extends A { public function getClosure() { return function () { A::foo(); }; } } $b = new B(); $b->getClosure()();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/uDi8W
function name:  (null)
number of ops:  8
compiled vars:  !0 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   17     0  E >   NEW                                              $1      'B'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   18     3        INIT_METHOD_CALL                                         !0, 'getClosure'
          4        DO_FCALL                                      0  $4      
          5        INIT_DYNAMIC_CALL                                        $4
          6        DO_FCALL                                      0          
          7      > RETURN                                                   1

Class A:
Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/uDi8W
function name:  foo
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   INIT_FCALL                                               'var_dump'
          1        FETCH_THIS                                       ~0      
          2        SEND_VAL                                                 ~0
          3        DO_ICALL                                                 
    6     4      > RETURN                                                   null

End of function foo

End of class A.

Class B:
Function getclosure:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/uDi8W
function name:  getClosure
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   DECLARE_LAMBDA_FUNCTION                          ~0      [0]
   13     1      > RETURN                                                   ~0
   14     2*     > 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/uDi8W
function name:  {closure}
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   INIT_STATIC_METHOD_CALL                                  'A', 'foo'
          1        DO_FCALL                                      0          
   13     2      > RETURN                                                   null

End of Dynamic Function 0

End of function getclosure

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/uDi8W
function name:  foo
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   INIT_FCALL                                               'var_dump'
          1        FETCH_THIS                                       ~0      
          2        SEND_VAL                                                 ~0
          3        DO_ICALL                                                 
    6     4      > RETURN                                                   null

End of function foo

End of class B.

Generated using Vulcan Logic Dumper, using php 8.0.0


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