3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = new stdClass; var_dump($foo->a->b->c ?? null);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/eWFoB
function name:  (null)
number of ops:  12
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'stdClass'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
    5     3        INIT_FCALL                                               'var_dump'
          4        FETCH_OBJ_IS                                     ~4      !0, 'a'
          5        FETCH_OBJ_IS                                     ~5      ~4, 'b'
          6        FETCH_OBJ_IS                                     ~6      ~5, 'c'
          7        COALESCE                                         ~7      ~6
          8        QM_ASSIGN                                        ~7      null
          9        SEND_VAL                                                 ~7
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
137.97 ms | 1398 KiB | 15 Q