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<?php final class DemoFile { private Bar $foo; public function __construct(?Bar $foo = null) { $this->foo = $foo ?? new Bar(); } public function work(): void { echo $this->foo::class; } } class Bar {} (new DemoFile(null))->work(); final class DemoFile2 { public function __construct(private readonly ?Bar $foo = new Bar()) { } public function work(): void { echo $this->foo::class; } } (new DemoFile2(null))->work();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VcW9g
function name:  (null)
number of ops:  11
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   19     0  E >   NEW                                              $0      'DemoFile'
          1        SEND_VAL_EX                                              null
          2        DO_FCALL                                      0          
          3        INIT_METHOD_CALL                                         $0, 'work'
          4        DO_FCALL                                      0          
   33     5        NEW                                              $3      'DemoFile2'
          6        SEND_VAL_EX                                              null
          7        DO_FCALL                                      0          
          8        INIT_METHOD_CALL                                         $3, 'work'
          9        DO_FCALL                                      0          
         10      > RETURN                                                   1

Class DemoFile:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VcW9g
function name:  __construct
number of ops:  8
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   RECV_INIT                                        !0      null
    8     1        COALESCE                                         ~2      !0
          2        NEW                                              $3      'Bar'
          3        DO_FCALL                                      0          
          4        QM_ASSIGN                                        ~2      $3
          5        ASSIGN_OBJ                                               'foo'
          6        OP_DATA                                                  ~2
    9     7      > RETURN                                                   null

End of function __construct

Function work:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VcW9g
function name:  work
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   13     0  E >   FETCH_OBJ_R                                      ~0      'foo'
          1        FETCH_CLASS_NAME                                 ~1      ~0
          2        ECHO                                                     ~1
   14     3      > RETURN                                                   null

End of function work

End of class DemoFile.

Class Bar: [no user functions]
Class DemoFile2:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VcW9g
function name:  __construct
number of ops:  4
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   23     0  E >   RECV_INIT                                        !0      <const ast>
          1        ASSIGN_OBJ                                               'foo'
          2        OP_DATA                                                  !0
   25     3      > RETURN                                                   null

End of function __construct

Function work:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VcW9g
function name:  work
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   29     0  E >   FETCH_OBJ_R                                      ~0      'foo'
          1        FETCH_CLASS_NAME                                 ~1      ~0
          2        ECHO                                                     ~1
   30     3      > RETURN                                                   null

End of function work

End of class DemoFile2.

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