3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private $a = 0; } $a = new A(); $b = (object)[chr(0) . 'A' . chr(0) . 'a' => 1]; $c = json_decode('{ "' . 'A' . 'a' . '":"2" }'); var_dump($c); echo $c->{chr(0) . 'A' . chr(0) . 'a'}; echo $b->{chr(0) . 'A' . chr(0) . 'a'}; echo $a->{chr(0) . 'A' . chr(0) . 'a'};
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/EkaDT
function name:  (null)
number of ops:  20
compiled vars:  !0 = $a, !1 = $b, !2 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   NEW                                              $3      'A'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $3
    8     3        INIT_ARRAY                                       ~6      1, '%00A%00a'
          4        CAST                                          8  ~7      ~6
          5        ASSIGN                                                   !1, ~7
    9     6        INIT_FCALL                                               'json_decode'
          7        SEND_VAL                                                 '%7B+%22Aa%22%3A%222%22+%7D'
          8        DO_ICALL                                         $9      
          9        ASSIGN                                                   !2, $9
   11    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !2
         12        DO_ICALL                                                 
   12    13        FETCH_OBJ_R                                      ~12     !2, '%00A%00a'
         14        ECHO                                                     ~12
   13    15        FETCH_OBJ_R                                      ~13     !1, '%00A%00a'
         16        ECHO                                                     ~13
   14    17        FETCH_OBJ_R                                      ~14     !0, '%00A%00a'
         18        ECHO                                                     ~14
         19      > RETURN                                                   1

Class A: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
163.76 ms | 1386 KiB | 17 Q