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<?php interface I{} class Data implements I{} abstract class P { public function getThing(): ?I { return null; } } class C extends P { public function getThing(): Data { return new Data; } } var_dump((new C)->getThing());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hdscV
function name:  (null)
number of ops:  10
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   DECLARE_CLASS                                            'data'
   14     1        DECLARE_CLASS                                            'c', 'p'
   21     2        INIT_FCALL                                               'var_dump'
          3        NEW                                              $0      'C'
          4        DO_FCALL                                      0          
          5        INIT_METHOD_CALL                                         $0, 'getThing'
          6        DO_FCALL                                      0  $2      
          7        SEND_VAR                                                 $2
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Class I: [no user functions]
Class Data: [no user functions]
Class P:
Function getthing:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hdscV
function name:  getThing
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E > > RETURN                                                   null
   11     1*       VERIFY_RETURN_TYPE                                       
          2*     > RETURN                                                   null

End of function getthing

End of class P.

Class C:
Function getthing:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hdscV
function name:  getThing
number of ops:  6
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   17     0  E >   NEW                                              $0      'Data'
          1        DO_FCALL                                      0          
          2        VERIFY_RETURN_TYPE                                       $0
          3      > RETURN                                                   $0
   18     4*       VERIFY_RETURN_TYPE                                       
          5*     > RETURN                                                   null

End of function getthing

End of class C.

Generated using Vulcan Logic Dumper, using php 8.0.0


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