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<?php $dom = new DOMDocument(); $dom->loadXml('<foo><bar/></foo>'); var_dump(isset($dom->documentElement), get_class($dom->documentElement)); var_dump(isset($dom->documentElement->parentNode), get_class($dom->documentElement->parentNode)); var_dump(isset($dom->documentElement->firstChild->parentNode), get_class($dom->documentElement->firstChild->parentNode));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ja9Uo
function name:  (null)
number of ops:  34
compiled vars:  !0 = $dom
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'DOMDocument'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
    4     3        INIT_METHOD_CALL                                         !0, 'loadXml'
          4        SEND_VAL_EX                                              '%3Cfoo%3E%3Cbar%2F%3E%3C%2Ffoo%3E'
          5        DO_FCALL                                      0          
    6     6        INIT_FCALL                                               'var_dump'
          7        ISSET_ISEMPTY_PROP_OBJ                           ~5      !0, 'documentElement'
          8        SEND_VAL                                                 ~5
          9        FETCH_OBJ_R                                      ~6      !0, 'documentElement'
         10        GET_CLASS                                        ~7      ~6
         11        SEND_VAL                                                 ~7
         12        DO_ICALL                                                 
    7    13        INIT_FCALL                                               'var_dump'
         14        FETCH_OBJ_IS                                     ~9      !0, 'documentElement'
         15        ISSET_ISEMPTY_PROP_OBJ                           ~10     ~9, 'parentNode'
         16        SEND_VAL                                                 ~10
         17        FETCH_OBJ_R                                      ~11     !0, 'documentElement'
         18        FETCH_OBJ_R                                      ~12     ~11, 'parentNode'
         19        GET_CLASS                                        ~13     ~12
         20        SEND_VAL                                                 ~13
         21        DO_ICALL                                                 
    8    22        INIT_FCALL                                               'var_dump'
         23        FETCH_OBJ_IS                                     ~15     !0, 'documentElement'
         24        FETCH_OBJ_IS                                     ~16     ~15, 'firstChild'
         25        ISSET_ISEMPTY_PROP_OBJ                           ~17     ~16, 'parentNode'
         26        SEND_VAL                                                 ~17
         27        FETCH_OBJ_R                                      ~18     !0, 'documentElement'
         28        FETCH_OBJ_R                                      ~19     ~18, 'firstChild'
         29        FETCH_OBJ_R                                      ~20     ~19, 'parentNode'
         30        GET_CLASS                                        ~21     ~20
         31        SEND_VAL                                                 ~21
         32        DO_ICALL                                                 
         33      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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