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<?php $o = new SimpleXMLElement('<root><elem>Text</elem></root>'); var_dump($o->elem2 ?? 'default'); $o = new stdClass(); var_dump($o->foo ?? 'default');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/PJGqt
function name:  (null)
number of ops:  20
compiled vars:  !0 = $o
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'SimpleXMLElement'
          1        SEND_VAL_EX                                              '%3Croot%3E%3Celem%3EText%3C%2Felem%3E%3C%2Froot%3E'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $1
    4     4        INIT_FCALL                                               'var_dump'
          5        FETCH_OBJ_IS                                     ~4      !0, 'elem2'
          6        COALESCE                                         ~5      ~4
          7        QM_ASSIGN                                        ~5      'default'
          8        SEND_VAL                                                 ~5
          9        DO_ICALL                                                 
    6    10        NEW                                              $7      'stdClass'
         11        DO_FCALL                                      0          
         12        ASSIGN                                                   !0, $7
    7    13        INIT_FCALL                                               'var_dump'
         14        FETCH_OBJ_IS                                     ~10     !0, 'foo'
         15        COALESCE                                         ~11     ~10
         16        QM_ASSIGN                                        ~11     'default'
         17        SEND_VAL                                                 ~11
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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