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<?php $obj = (object) [ 'items' => [ 'one', 'two' ] ]; echo (isset($obj->items2->demo)) ? "true" : "false";
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 5, Position 2 = 7
Branch analysis from position: 5
1 jumps found. (Code = 42) Position 1 = 8
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Z6V54
function name:  (null)
number of ops:  10
compiled vars:  !0 = $obj
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   CAST                                          8  ~1      <array>
    3     1        ASSIGN                                                   !0, ~1
   10     2        FETCH_OBJ_IS                                     ~3      !0, 'items2'
          3        ISSET_ISEMPTY_PROP_OBJ                                   ~3, 'demo'
          4      > JMPZ                                                     ~4, ->7
          5    >   QM_ASSIGN                                        ~5      'true'
          6      > JMP                                                      ->8
          7    >   QM_ASSIGN                                        ~5      'false'
          8    >   ECHO                                                     ~5
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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