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<?php class A { public function fn(A $obj=null) { var_dump($obj); } } $a = new A; $a->fn($a); $a->fn(null);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/b3gXW
function name:  (null)
number of ops:  10
compiled vars:  !0 = $a
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   11     0  E >   NEW                                                  $1      'A'
          1        DO_FCALL                                          0          
          2        ASSIGN                                                       !0, $1
   12     3        INIT_METHOD_CALL                                             !0, 'fn'
          4        SEND_VAR_EX                                                  !0
          5        DO_FCALL                                          0          
   13     6        INIT_METHOD_CALL                                             !0, 'fn'
          7        SEND_VAL_EX                                                  null
          8        DO_FCALL                                          0          
          9      > RETURN                                                       1

Class A:
Function fn:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/b3gXW
function name:  fn
number of ops:  5
compiled vars:  !0 = $obj
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    5     0  E >   RECV_INIT                                            !0      null
    7     1        INIT_FCALL                                                   'var_dump'
          2        SEND_VAR                                                     !0
          3        DO_ICALL                                                     
    8     4      > RETURN                                                       null

End of function fn

End of class A.

Generated using Vulcan Logic Dumper, using php 8.5.0


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