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run code in 300+ PHP versions simultaneously
<?php phpversion() >= "7.0.1" or die(); $obj = new stdClass(); $obj->bar = "abc"; $data = array("foo" => "bar"); $key = "foo"; // the bad: try { echo $obj->${data[$key]}; // syntax error } catch (Error $e){ echo $e->getMessage(),"\n"; } // uvs - the good: without and within a string echo $obj->{$data[$key]},"\n"; echo "{$obj->{$data[$key]}}\n"; $obj->bar = "xyz"; // uvs - complex curly brace syntax: without and within a string echo $obj->{${'data'}[$key]},"\n"; echo "{$obj->{${'data'}[$key]}}\n"; echo "{$obj->{${data}[$key]}}\n";
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 47) Position 1 = 4, Position 2 = 6
Branch analysis from position: 4
1 jumps found. (Code = 79) Position 1 = -2
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 24
Branch analysis from position: 24
1 jumps found. (Code = 62) Position 1 = -2
Found catch point at position: 19
Branch analysis from position: 19
2 jumps found. (Code = 107) Position 1 = 20, Position 2 = -2
Branch analysis from position: 20
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/LmWbA
function name:  (null)
number of ops:  52
compiled vars:  !0 = $obj, !1 = $data, !2 = $key, !3 = $e
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'phpversion'
          1        DO_ICALL                                         $4      
          2        IS_SMALLER_OR_EQUAL                              ~5      '7.0.1', $4
          3      > JMPNZ_EX                                         ~5      ~5, ->6
          4    > > EXIT                                                     
          5*       BOOL                                             ~5      <true>
    4     6    >   NEW                                              $6      'stdClass'
          7        DO_FCALL                                      0          
          8        ASSIGN                                                   !0, $6
    5     9        ASSIGN_OBJ                                               !0, 'bar'
         10        OP_DATA                                                  'abc'
    6    11        ASSIGN                                                   !1, <array>
    7    12        ASSIGN                                                   !2, 'foo'
   11    13        FETCH_CONSTANT                                   ~12     'data'
         14        FETCH_DIM_R                                      ~13     ~12, !2
         15        FETCH_R                      local               ~14     ~13
         16        FETCH_OBJ_R                                      ~15     !0, ~14
         17        ECHO                                                     ~15
         18      > JMP                                                      ->24
   12    19  E > > CATCH                                       last         'Error'
   13    20    >   INIT_METHOD_CALL                                         !3, 'getMessage'
         21        DO_FCALL                                      0  $16     
         22        ECHO                                                     $16
         23        ECHO                                                     '%0A'
   17    24    >   FETCH_DIM_R                                      ~17     !1, !2
         25        FETCH_OBJ_R                                      ~18     !0, ~17
         26        ECHO                                                     ~18
         27        ECHO                                                     '%0A'
   18    28        FETCH_DIM_R                                      ~19     !1, !2
         29        FETCH_OBJ_R                                      ~20     !0, ~19
         30        NOP                                                      
         31        FAST_CONCAT                                      ~21     ~20, '%0A'
         32        ECHO                                                     ~21
   20    33        ASSIGN_OBJ                                               !0, 'bar'
         34        OP_DATA                                                  'xyz'
   23    35        FETCH_DIM_R                                      ~23     !1, !2
         36        FETCH_OBJ_R                                      ~24     !0, ~23
         37        ECHO                                                     ~24
         38        ECHO                                                     '%0A'
   24    39        FETCH_DIM_R                                      ~25     !1, !2
         40        FETCH_OBJ_R                                      ~26     !0, ~25
         41        NOP                                                      
         42        FAST_CONCAT                                      ~27     ~26, '%0A'
         43        ECHO                                                     ~27
   25    44        FETCH_CONSTANT                                   ~28     'data'
         45        FETCH_R                      local               ~29     ~28
         46        FETCH_DIM_R                                      ~30     ~29, !2
         47        FETCH_OBJ_R                                      ~31     !0, ~30
         48        NOP                                                      
         49        FAST_CONCAT                                      ~32     ~31, '%0A'
         50        ECHO                                                     ~32
         51      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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