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<?php $obj = new stdClass(); $obj->bar = "xyz"; $data = array("foo" => "bar"); $key = "foo"; // echo $obj->${data[$key]}; syntax error echo $obj->{$data[$key]}; $member = $data[$key]; echo $obj->${member}; echo $obj->{$member}; echo "${data[$key]}"; // of course, this works echo "{$data[$key]}";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ldZKl
function name:  (null)
number of ops:  25
compiled vars:  !0 = $obj, !1 = $data, !2 = $key, !3 = $member
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   NEW                                                  $4      'stdClass'
          1        DO_FCALL                                          0          
          2        ASSIGN                                                       !0, $4
    4     3        ASSIGN_OBJ                                                   !0, 'bar'
          4        OP_DATA                                                      'xyz'
    5     5        ASSIGN                                                       !1, <array>
    6     6        ASSIGN                                                       !2, 'foo'
    8     7        FETCH_DIM_R                                          ~10     !1, !2
          8        FETCH_OBJ_R                                          ~11     !0, ~10
          9        ECHO                                                         ~11
    9    10        FETCH_DIM_R                                          ~12     !1, !2
         11        ASSIGN                                                       !3, ~12
   10    12        FETCH_CONSTANT                                       ~14     'member'
         13        FETCH_R                          local               ~15     ~14
         14        FETCH_OBJ_R                                          ~16     !0, ~15
         15        ECHO                                                         ~16
   11    16        FETCH_OBJ_R                                          ~17     !0, !3
         17        ECHO                                                         ~17
   13    18        FETCH_DIM_R                                          ~18     !1, !2
         19        CAST                                              6  ~19     ~18
         20        ECHO                                                         ~19
   14    21        FETCH_DIM_R                                          ~20     !1, !2
         22        CAST                                              6  ~21     ~20
         23        ECHO                                                         ~21
         24      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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