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<?php @$foo->getData()['user_id'];
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/BiM89
function name:  (null)
number of ops:  7
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   BEGIN_SILENCE                                    ~1      
          1        INIT_METHOD_CALL                                         !0, 'getData'
          2        DO_FCALL                                      0  $2      
          3        FETCH_DIM_R                                      ~3      $2, 'user_id'
          4        END_SILENCE                                              ~1
          5        FREE                                                     ~3
          6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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