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<?php interface MyInterface { function test (B $b); } class A {} class B extends A {} class C implements MyInterface { function test (B $b) {} } class D implements MyInterface { function test (A $a) {} }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/83PVR
function name:  (null)
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   DECLARE_CLASS                                            'c'
   15     1        DECLARE_CLASS                                            'd'
   18     2      > RETURN                                                   1

Class MyInterface:
Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/83PVR
function name:  test
number of ops:  2
compiled vars:  !0 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
          1      > RETURN                                                   null

End of function test

End of class MyInterface.

Class A: [no user functions]
Class B: [no user functions]
Class C:
Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/83PVR
function name:  test
number of ops:  2
compiled vars:  !0 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   RECV                                             !0      
          1      > RETURN                                                   null

End of function test

End of class C.

Class D:
Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/83PVR
function name:  test
number of ops:  2
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   16     0  E >   RECV                                             !0      
          1      > RETURN                                                   null

End of function test

End of class D.

Generated using Vulcan Logic Dumper, using php 8.0.0


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