3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public $b =1; public $c = 2; public function test(){ return $this->a + $this->b; } } class B extends A{ public $b = 5; public $c = 10; } $a = new B(); echo $a->test();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iFEfq
function name:  (null)
number of ops:  7
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   17     0  E >   NEW                                              $1      'B'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   18     3        INIT_METHOD_CALL                                         !0, 'test'
          4        DO_FCALL                                      0  $4      
          5        ECHO                                                     $4
          6      > RETURN                                                   1

Class A:
Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iFEfq
function name:  test
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   FETCH_OBJ_R                                      ~0      'a'
          1        FETCH_OBJ_R                                      ~1      'b'
          2        ADD                                              ~2      ~0, ~1
          3      > RETURN                                                   ~2
    9     4*     > RETURN                                                   null

End of function test

End of class A.

Class B:
Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iFEfq
function name:  test
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   FETCH_OBJ_R                                      ~0      'a'
          1        FETCH_OBJ_R                                      ~1      'b'
          2        ADD                                              ~2      ~0, ~1
          3      > RETURN                                                   ~2
    9     4*     > RETURN                                                   null

End of function test

End of class B.

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
157.4 ms | 1394 KiB | 13 Q