3v4l.org

run code in 300+ PHP versions simultaneously
<?php $dom = new DOMDocument(); $dom->loadXml('<foo><bar/><bar/></foo>'); var_dump(isset($dom->documentElement->parentNode), get_class($dom->documentElement->parentNode)); var_dump(isset($dom->documentElement->firstChild->parentNode), get_class($dom->documentElement->firstChild->parentNode)); var_dump(isset($dom->documentElement->firstChild->nextSibling), get_class($dom->documentElement->firstChild->nextSibling)); var_dump(isset($dom->documentElement->lastChild->previousSibling), get_class($dom->documentElement->lastChild->previousSibling));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/jQifI
function name:  (null)
number of ops:  49
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%3Cbar%2F%3E%3C%2Ffoo%3E'
          5        DO_FCALL                                      0          
    6     6        INIT_FCALL                                               'var_dump'
          7        FETCH_OBJ_IS                                     ~5      !0, 'documentElement'
          8        ISSET_ISEMPTY_PROP_OBJ                           ~6      ~5, 'parentNode'
          9        SEND_VAL                                                 ~6
         10        FETCH_OBJ_R                                      ~7      !0, 'documentElement'
         11        FETCH_OBJ_R                                      ~8      ~7, 'parentNode'
         12        GET_CLASS                                        ~9      ~8
         13        SEND_VAL                                                 ~9
         14        DO_ICALL                                                 
    7    15        INIT_FCALL                                               'var_dump'
         16        FETCH_OBJ_IS                                     ~11     !0, 'documentElement'
         17        FETCH_OBJ_IS                                     ~12     ~11, 'firstChild'
         18        ISSET_ISEMPTY_PROP_OBJ                           ~13     ~12, 'parentNode'
         19        SEND_VAL                                                 ~13
         20        FETCH_OBJ_R                                      ~14     !0, 'documentElement'
         21        FETCH_OBJ_R                                      ~15     ~14, 'firstChild'
         22        FETCH_OBJ_R                                      ~16     ~15, 'parentNode'
         23        GET_CLASS                                        ~17     ~16
         24        SEND_VAL                                                 ~17
         25        DO_ICALL                                                 
    8    26        INIT_FCALL                                               'var_dump'
         27        FETCH_OBJ_IS                                     ~19     !0, 'documentElement'
         28        FETCH_OBJ_IS                                     ~20     ~19, 'firstChild'
         29        ISSET_ISEMPTY_PROP_OBJ                           ~21     ~20, 'nextSibling'
         30        SEND_VAL                                                 ~21
         31        FETCH_OBJ_R                                      ~22     !0, 'documentElement'
         32        FETCH_OBJ_R                                      ~23     ~22, 'firstChild'
         33        FETCH_OBJ_R                                      ~24     ~23, 'nextSibling'
         34        GET_CLASS                                        ~25     ~24
         35        SEND_VAL                                                 ~25
         36        DO_ICALL                                                 
    9    37        INIT_FCALL                                               'var_dump'
         38        FETCH_OBJ_IS                                     ~27     !0, 'documentElement'
         39        FETCH_OBJ_IS                                     ~28     ~27, 'lastChild'
         40        ISSET_ISEMPTY_PROP_OBJ                           ~29     ~28, 'previousSibling'
         41        SEND_VAL                                                 ~29
         42        FETCH_OBJ_R                                      ~30     !0, 'documentElement'
         43        FETCH_OBJ_R                                      ~31     ~30, 'lastChild'
         44        FETCH_OBJ_R                                      ~32     ~31, 'previousSibling'
         45        GET_CLASS                                        ~33     ~32
         46        SEND_VAL                                                 ~33
         47        DO_ICALL                                                 
         48      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.34 ms | 1400 KiB | 15 Q