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<?php class A { public function create() { $class = __CLASS__; return new $class(); } } class B extends A { } $a = new A(); var_dump($a->create() instanceof B);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/P6sHt
function name:  (null)
number of ops:  10
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   18     0  E >   NEW                                              $1      'A'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   19     3        INIT_FCALL                                               'var_dump'
          4        INIT_METHOD_CALL                                         !0, 'create'
          5        DO_FCALL                                      0  $4      
          6        INSTANCEOF                                       ~5      $4, 'B'
          7        SEND_VAL                                                 ~5
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Class A:
Function create:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/P6sHt
function name:  create
number of ops:  6
compiled vars:  !0 = $class
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   ASSIGN                                                   !0, 'A'
    9     1        FETCH_CLASS                                   0  $2      !0
          2        NEW                                              $3      $2
          3        DO_FCALL                                      0          
          4      > RETURN                                                   $3
   10     5*     > RETURN                                                   null

End of function create

End of class A.

Class B:
Function create:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/P6sHt
function name:  create
number of ops:  6
compiled vars:  !0 = $class
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   ASSIGN                                                   !0, 'A'
    9     1        FETCH_CLASS                                   0  $2      !0
          2        NEW                                              $3      $2
          3        DO_FCALL                                      0          
          4      > RETURN                                                   $3
   10     5*     > RETURN                                                   null

End of function create

End of class B.

Generated using Vulcan Logic Dumper, using php 8.0.0


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