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<?php abstract class A { abstract public function foo(A $a): A; } class B extends A { public function foo(A $a): B { } }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lYHF1
function name:  (null)
number of ops:  1
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E > > RETURN                                                   1

Class A:
Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lYHF1
function name:  foo
number of ops:  3
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
          1        VERIFY_RETURN_TYPE                                       
          2      > RETURN                                                   null

End of function foo

End of class A.

Class B:
Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lYHF1
function name:  foo
number of ops:  3
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   RECV                                             !0      
   10     1        VERIFY_RETURN_TYPE                                       
          2      > RETURN                                                   null

End of function foo

End of class B.

Generated using Vulcan Logic Dumper, using php 8.0.0


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