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<?php abstract class A{ abstract function aa($f, $b); } class B{ function aa($f) { } }
based on 3Q8C0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/DLrAv
function name:  (null)
number of ops:  3
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   NOP                                                      
   8     1        NOP                                                      
  14     2      > RETURN                                                   1

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

End of function aa

End of class A.

Class B:
Function aa:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/DLrAv
function name:  aa
number of ops:  2
compiled vars:  !0 = $f
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   9     0  E >   RECV                                             !0      
  12     1      > RETURN                                                   null

End of function aa

End of class B.

Generated using Vulcan Logic Dumper, using php 7.3.0