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<?php class Foo { public function test() : string { return 'test'; } } class Bar extends Foo { public function test(string $word = '') : string { return parent::test() . ' ' . $word; } } $bar = new Bar(); echo $bar->test('huya');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/nhDef
function name:  (null)
number of ops:  8
compiled vars:  !0 = $bar
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   19     0  E >   NEW                                              $1      'Bar'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   20     3        INIT_METHOD_CALL                                         !0, 'test'
          4        SEND_VAL_EX                                              'huya'
          5        DO_FCALL                                      0  $4      
          6        ECHO                                                     $4
          7      > RETURN                                                   1

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

End of function test

End of class Foo.

Class Bar:
Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/nhDef
function name:  test
number of ops:  9
compiled vars:  !0 = $word
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   13     0  E >   RECV_INIT                                        !0      ''
   15     1        INIT_STATIC_METHOD_CALL                                  'test'
          2        DO_FCALL                                      0  $1      
          3        CONCAT                                           ~2      $1, '+'
          4        CONCAT                                           ~3      ~2, !0
          5        VERIFY_RETURN_TYPE                                       ~3
          6      > RETURN                                                   ~3
   16     7*       VERIFY_RETURN_TYPE                                       
          8*     > RETURN                                                   null

End of function test

End of class Bar.

Generated using Vulcan Logic Dumper, using php 8.0.0


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