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<?php interface Foo { public function bar($x); } class Baz implements Foo { public function bar($x, $y=null) { echo($x.$y); } } (new Baz)->bar(4, 2);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5feE5
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   DECLARE_CLASS                                            'baz'
   16     1        NEW                                              $0      'Baz'
          2        DO_FCALL                                      0          
          3        INIT_METHOD_CALL                                         $0, 'bar'
          4        SEND_VAL_EX                                              4
          5        SEND_VAL_EX                                              2
          6        DO_FCALL                                      0          
          7      > RETURN                                                   1

Class Foo:
Function bar:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5feE5
function name:  bar
number of ops:  2
compiled vars:  !0 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
          1      > RETURN                                                   null

End of function bar

End of class Foo.

Class Baz:
Function bar:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5feE5
function name:  bar
number of ops:  5
compiled vars:  !0 = $x, !1 = $y
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   RECV                                             !0      
          1        RECV_INIT                                        !1      null
   11     2        CONCAT                                           ~2      !0, !1
          3        ECHO                                                     ~2
   12     4      > RETURN                                                   null

End of function bar

End of class Baz.

Generated using Vulcan Logic Dumper, using php 8.0.0


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