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<?php $d = new \stdClass(); var_dump(isset($d->asdf[0]));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Yk91E
function name:  (null)
number of ops:  9
compiled vars:  !0 = $d
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'stdClass'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
    4     3        INIT_FCALL                                               'var_dump'
          4        FETCH_OBJ_IS                                     ~4      !0, 'asdf'
          5        ISSET_ISEMPTY_DIM_OBJ                         0  ~5      ~4, 0
          6        SEND_VAL                                                 ~5
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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