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<?php $obj = new stdClass; $obj->foo = 'something'; $arr = ['foo']; echo $obj->$arr[0];
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/gB0rQ
function name:  (null)
number of ops:  10
compiled vars:  !0 = $obj, !1 = $arr
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $2      'stdClass'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $2
    3     3        ASSIGN_OBJ                                               !0, 'foo'
          4        OP_DATA                                                  'something'
    5     5        ASSIGN                                                   !1, <array>
    7     6        FETCH_OBJ_R                                      ~7      !0, !1
          7        FETCH_DIM_R                                      ~8      ~7, 0
          8        ECHO                                                     ~8
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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