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<?php class SomeParent { public function foo(): self { return $this; } } final class SomeChild extends SomeParent { public function foo(): SomeChild { return $this; } } var_dump((new SomeChild())->foo());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iQc6R
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   19     0  E >   INIT_FCALL                                               'var_dump'
          1        NEW                                              $0      'SomeChild'
          2        DO_FCALL                                      0          
          3        INIT_METHOD_CALL                                         $0, 'foo'
          4        DO_FCALL                                      0  $2      
          5        SEND_VAR                                                 $2
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Class SomeParent:
Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iQc6R
function name:  foo
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   FETCH_THIS                                       ~0      
          1        VERIFY_RETURN_TYPE                                       ~0
          2      > RETURN                                                   ~0
    8     3*       VERIFY_RETURN_TYPE                                       
          4*     > RETURN                                                   null

End of function foo

End of class SomeParent.

Class SomeChild:
Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iQc6R
function name:  foo
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   15     0  E >   FETCH_THIS                                       ~0      
          1        VERIFY_RETURN_TYPE                                       ~0
          2      > RETURN                                                   ~0
   16     3*       VERIFY_RETURN_TYPE                                       
          4*     > RETURN                                                   null

End of function foo

End of class SomeChild.

Generated using Vulcan Logic Dumper, using php 8.0.0


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