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<?php $object = new \ArrayObject(['item' => null]); var_dump($object instanceof \ArrayAccess, isset($object['item'])); $object->item;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qtss2
function name:  (null)
number of ops:  13
compiled vars:  !0 = $object
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'ArrayObject'
          1        SEND_VAL_EX                                              <array>
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $1
    4     4        INIT_FCALL                                               'var_dump'
          5        INSTANCEOF                                       ~4      !0, 'ArrayAccess'
          6        SEND_VAL                                                 ~4
          7        ISSET_ISEMPTY_DIM_OBJ                         0  ~5      !0, 'item'
          8        SEND_VAL                                                 ~5
          9        DO_ICALL                                                 
    5    10        FETCH_OBJ_R                                      ~7      !0, 'item'
         11        FREE                                                     ~7
    6    12      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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