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<?php class Foo { public function __toString() { return '42'; } } class Bar extends Foo { public function __toString() { return parent::__toString() . ' foobar'; } } echo new Bar;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/pDZ36
function name:  (null)
number of ops:  6
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   DECLARE_CLASS                                            'foo'
    6     1        DECLARE_CLASS                                            'bar', 'foo'
   10     2        NEW                                              $0      'Bar'
          3        DO_FCALL                                      0          
          4        ECHO                                                     $0
          5      > RETURN                                                   1

Class Foo:
Function __tostring:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/pDZ36
function name:  __toString
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E > > RETURN                                                   '42'
          1*       VERIFY_RETURN_TYPE                                       
          2*     > RETURN                                                   null

End of function __tostring

End of class Foo.

Class Bar:
Function __tostring:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/pDZ36
function name:  __toString
number of ops:  7
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   INIT_STATIC_METHOD_CALL                                  '__toString'
          1        DO_FCALL                                      0  $0      
          2        CONCAT                                           ~1      $0, '+foobar'
          3        VERIFY_RETURN_TYPE                                       ~1
          4      > RETURN                                                   ~1
          5*       VERIFY_RETURN_TYPE                                       
          6*     > RETURN                                                   null

End of function __tostring

End of class Bar.

Generated using Vulcan Logic Dumper, using php 8.0.0


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