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<?php Interface I{ public static function init(?string $url): self; } class C implements I{ public static function init(?string $url): self{ return new self(); } } $o = C::init("foo"); var_dump($o);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VYbGn
function name:  (null)
number of ops:  9
compiled vars:  !0 = $o
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   DECLARE_CLASS                                            'c'
   10     1        INIT_STATIC_METHOD_CALL                                  'C', 'init'
          2        SEND_VAL_EX                                              'foo'
          3        DO_FCALL                                      0  $1      
          4        ASSIGN                                                   !0, $1
   11     5        INIT_FCALL                                               'var_dump'
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

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

End of function init

End of class I.

Class C:
Function init:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VYbGn
function name:  init
number of ops:  7
compiled vars:  !0 = $url
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   RECV                                             !0      
    7     1        NEW                          self                $1      
          2        DO_FCALL                                      0          
          3        VERIFY_RETURN_TYPE                                       $1
          4      > RETURN                                                   $1
    8     5*       VERIFY_RETURN_TYPE                                       
          6*     > RETURN                                                   null

End of function init

End of class C.

Generated using Vulcan Logic Dumper, using php 8.0.0


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