3v4l.org

run code in 500+ PHP versions simultaneously
<?php class Foo { protected $test; function setTest($test) { $this->test = $test; return $this; } } class Bar extends Foo { function setTest($test) : Bar { return parent::setTest($test); } } var_dump((new Bar)->setTest('test'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/YdB8s
function name:  (null)
number of ops:  9
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   17     0  E >   INIT_FCALL                                                   'var_dump'
          1        NEW                                                  $0      'Bar'
          2        DO_FCALL                                          0          
          3        INIT_METHOD_CALL                                             $0, 'setTest'
          4        SEND_VAL_EX                                                  'test'
          5        DO_FCALL                                          0  $2      
          6        SEND_VAR                                                     $2
          7        DO_ICALL                                                     
          8      > RETURN                                                       1

Class Foo:
Function settest:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/YdB8s
function name:  setTest
number of ops:  6
compiled vars:  !0 = $test
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    5     0  E >   RECV                                                 !0      
    6     1        ASSIGN_OBJ                                                   'test'
          2        OP_DATA                                                      !0
    7     3        FETCH_THIS                                           ~2      
          4      > RETURN                                                       ~2
    8     5*     > RETURN                                                       null

End of function settest

End of class Foo.

Class Bar:
Function settest:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/YdB8s
function name:  setTest
number of ops:  8
compiled vars:  !0 = $test
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   12     0  E >   RECV                                                 !0      
   13     1        INIT_STATIC_METHOD_CALL                                      'setTest'
          2        SEND_VAR_EX                                                  !0
          3        DO_FCALL                                          0  $1      
          4        VERIFY_RETURN_TYPE                                           $1
          5      > RETURN                                                       $1
   14     6*       VERIFY_RETURN_TYPE                                           
          7*     > RETURN                                                       null

End of function settest

End of class Bar.

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
238.07 ms | 3300 KiB | 14 Q