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<?php echo __DIR__; $t = (object) array('test' => 'blub'); var_dump(isset($t->test), isset($t->fail), empty($t->fail));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6l48Q
function name:  (null)
number of ops:  12
compiled vars:  !0 = $t
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ECHO                                                     '%2Fin'
    4     1        CAST                                          8  ~1      <array>
          2        ASSIGN                                                   !0, ~1
    5     3        INIT_FCALL                                               'var_dump'
          4        ISSET_ISEMPTY_PROP_OBJ                           ~3      !0, 'test'
          5        SEND_VAL                                                 ~3
          6        ISSET_ISEMPTY_PROP_OBJ                           ~4      !0, 'fail'
          7        SEND_VAL                                                 ~4
          8        ISSET_ISEMPTY_PROP_OBJ                           ~5      !0, 'fail'
          9        SEND_VAL                                                 ~5
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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