3v4l.org

run code in 300+ PHP versions simultaneously
<?php //error_reporting(-1); $null = null; $arr = array(); $str = 'string'; $int = 7; $dbl = 7.3; $bool = true; $obj = new stdClass(); echo $null['nope']; echo $null['nope']['sure']; echo $arr['nope']; echo $arr['nope']['sure']; echo $str['nope']; echo $str['nope']['sure']; echo $int['nope']; echo $int['nope']['sure']; echo $dbl['nope']; echo $dbl['nope']['sure']; echo $bool['nope']; echo $bool['nope']['sure']; echo $obj['nope']; echo $obj['nope']['sure'];
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XFcR7
function name:  (null)
number of ops:  45
compiled vars:  !0 = $null, !1 = $arr, !2 = $str, !3 = $int, !4 = $dbl, !5 = $bool, !6 = $obj
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   ASSIGN                                                   !0, null
    6     1        ASSIGN                                                   !1, <array>
    7     2        ASSIGN                                                   !2, 'string'
    8     3        ASSIGN                                                   !3, 7
    9     4        ASSIGN                                                   !4, 7.3
   10     5        ASSIGN                                                   !5, <true>
   11     6        NEW                                              $13     'stdClass'
          7        DO_FCALL                                      0          
          8        ASSIGN                                                   !6, $13
   13     9        FETCH_DIM_R                                      ~16     !0, 'nope'
         10        ECHO                                                     ~16
   14    11        FETCH_DIM_R                                      ~17     !0, 'nope'
         12        FETCH_DIM_R                                      ~18     ~17, 'sure'
         13        ECHO                                                     ~18
   16    14        FETCH_DIM_R                                      ~19     !1, 'nope'
         15        ECHO                                                     ~19
   17    16        FETCH_DIM_R                                      ~20     !1, 'nope'
         17        FETCH_DIM_R                                      ~21     ~20, 'sure'
         18        ECHO                                                     ~21
   19    19        FETCH_DIM_R                                      ~22     !2, 'nope'
         20        ECHO                                                     ~22
   20    21        FETCH_DIM_R                                      ~23     !2, 'nope'
         22        FETCH_DIM_R                                      ~24     ~23, 'sure'
         23        ECHO                                                     ~24
   22    24        FETCH_DIM_R                                      ~25     !3, 'nope'
         25        ECHO                                                     ~25
   23    26        FETCH_DIM_R                                      ~26     !3, 'nope'
         27        FETCH_DIM_R                                      ~27     ~26, 'sure'
         28        ECHO                                                     ~27
   25    29        FETCH_DIM_R                                      ~28     !4, 'nope'
         30        ECHO                                                     ~28
   26    31        FETCH_DIM_R                                      ~29     !4, 'nope'
         32        FETCH_DIM_R                                      ~30     ~29, 'sure'
         33        ECHO                                                     ~30
   28    34        FETCH_DIM_R                                      ~31     !5, 'nope'
         35        ECHO                                                     ~31
   29    36        FETCH_DIM_R                                      ~32     !5, 'nope'
         37        FETCH_DIM_R                                      ~33     ~32, 'sure'
         38        ECHO                                                     ~33
   31    39        FETCH_DIM_R                                      ~34     !6, 'nope'
         40        ECHO                                                     ~34
   32    41        FETCH_DIM_R                                      ~35     !6, 'nope'
         42        FETCH_DIM_R                                      ~36     ~35, 'sure'
         43        ECHO                                                     ~36
         44      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
146.89 ms | 1399 KiB | 13 Q