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<?php declare(strict_types = 1); echo $a?->foo; echo $a?->foo ?? ''; echo isset($a?->foo); echo $a->foo; echo $a->foo ?? ''; echo isset($a->foo);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/bgVKX
function name:  (null)
number of ops:  20
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   JMP_NULL                                         ~1      !0
          1        FETCH_OBJ_R                                      ~1      !0, 'foo'
          2        ECHO                                                     ~1
    4     3        JMP_NULL                                         ~2      !0
          4        FETCH_OBJ_IS                                     ~2      !0, 'foo'
          5        COALESCE                                         ~3      ~2
          6        QM_ASSIGN                                        ~3      ''
          7        ECHO                                                     ~3
    5     8        JMP_NULL                                         ~4      !0
          9        ISSET_ISEMPTY_PROP_OBJ                           ~4      !0, 'foo'
         10        ECHO                                                     ~4
    7    11        FETCH_OBJ_R                                      ~5      !0, 'foo'
         12        ECHO                                                     ~5
    8    13        FETCH_OBJ_IS                                     ~6      !0, 'foo'
         14        COALESCE                                         ~7      ~6
         15        QM_ASSIGN                                        ~7      ''
         16        ECHO                                                     ~7
    9    17        ISSET_ISEMPTY_PROP_OBJ                           ~8      !0, 'foo'
         18        ECHO                                                     ~8
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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