3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=array(); $a[-2]=mt_rand(0,1); $a[-1]=mt_rand(0,1); $a[0] =mt_rand(0,1); $a[ 1]=mt_rand(0,1); $obj=(object)$a; echo $obj->{-2}.', '.$obj->{0}.', '.$obj->{1}."\n"; print_r($obj); $b =(array)$obj; echo $b[-2].', '.$b[0].', '.$b[1]."\n"; $obj=unserializable(serializable($obj)); echo $obj->{-2}.', '.$obj->{0}.', '.$obj->{1}."\n"; ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/aV2oD
function name:  (null)
number of ops:  67
compiled vars:  !0 = $a, !1 = $obj, !2 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        INIT_FCALL                                               'mt_rand'
          2        SEND_VAL                                                 0
          3        SEND_VAL                                                 1
          4        DO_ICALL                                         $5      
          5        ASSIGN_DIM                                               !0, -2
          6        OP_DATA                                                  $5
    4     7        INIT_FCALL                                               'mt_rand'
          8        SEND_VAL                                                 0
          9        SEND_VAL                                                 1
         10        DO_ICALL                                         $7      
         11        ASSIGN_DIM                                               !0, -1
         12        OP_DATA                                                  $7
    5    13        INIT_FCALL                                               'mt_rand'
         14        SEND_VAL                                                 0
         15        SEND_VAL                                                 1
         16        DO_ICALL                                         $9      
         17        ASSIGN_DIM                                               !0, 0
         18        OP_DATA                                                  $9
    6    19        INIT_FCALL                                               'mt_rand'
         20        SEND_VAL                                                 0
         21        SEND_VAL                                                 1
         22        DO_ICALL                                         $11     
         23        ASSIGN_DIM                                               !0, 1
         24        OP_DATA                                                  $11
    8    25        CAST                                          8  ~12     !0
         26        ASSIGN                                                   !1, ~12
    9    27        FETCH_OBJ_R                                      ~14     !1, '-2'
         28        CONCAT                                           ~15     ~14, '%2C+'
         29        FETCH_OBJ_R                                      ~16     !1, '0'
         30        CONCAT                                           ~17     ~15, ~16
         31        CONCAT                                           ~18     ~17, '%2C+'
         32        FETCH_OBJ_R                                      ~19     !1, '1'
         33        CONCAT                                           ~20     ~18, ~19
         34        CONCAT                                           ~21     ~20, '%0A'
         35        ECHO                                                     ~21
   11    36        INIT_FCALL                                               'print_r'
         37        SEND_VAR                                                 !1
         38        DO_ICALL                                                 
   12    39        CAST                                          7  ~23     !1
         40        ASSIGN                                                   !2, ~23
   13    41        FETCH_DIM_R                                      ~25     !2, -2
         42        CONCAT                                           ~26     ~25, '%2C+'
         43        FETCH_DIM_R                                      ~27     !2, 0
         44        CONCAT                                           ~28     ~26, ~27
         45        CONCAT                                           ~29     ~28, '%2C+'
         46        FETCH_DIM_R                                      ~30     !2, 1
         47        CONCAT                                           ~31     ~29, ~30
         48        CONCAT                                           ~32     ~31, '%0A'
         49        ECHO                                                     ~32
   15    50        INIT_FCALL_BY_NAME                                       'unserializable'
         51        INIT_FCALL_BY_NAME                                       'serializable'
         52        SEND_VAR_EX                                              !1
         53        DO_FCALL                                      0  $33     
         54        SEND_VAR_NO_REF_EX                                       $33
         55        DO_FCALL                                      0  $34     
         56        ASSIGN                                                   !1, $34
   16    57        FETCH_OBJ_R                                      ~36     !1, '-2'
         58        CONCAT                                           ~37     ~36, '%2C+'
         59        FETCH_OBJ_R                                      ~38     !1, '0'
         60        CONCAT                                           ~39     ~37, ~38
         61        CONCAT                                           ~40     ~39, '%2C+'
         62        FETCH_OBJ_R                                      ~41     !1, '1'
         63        CONCAT                                           ~42     ~40, ~41
         64        CONCAT                                           ~43     ~42, '%0A'
         65        ECHO                                                     ~43
   18    66      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
145.28 ms | 1400 KiB | 17 Q