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<?php $user = null; $message = 'Hello '.($user) ?: 'Guest'; echo $message . "\n"; $message = 'Hello '.(($user) ?: 'Guest'); echo $message . "\n"; $user = 'x'; $message = 'Hello '.($user) ?: 'Guest'; echo $message . "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3l9Wk
function name:  (null)
number of ops:  21
compiled vars:  !0 = $user, !1 = $message
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, null
    4     1        CONCAT                                           ~3      'Hello+', !0
          2        JMP_SET                                          ~4      ~3, ->4
          3        QM_ASSIGN                                        ~4      'Guest'
          4        ASSIGN                                                   !1, ~4
    5     5        CONCAT                                           ~6      !1, '%0A'
          6        ECHO                                                     ~6
    7     7        JMP_SET                                          ~7      !0, ->9
          8        QM_ASSIGN                                        ~7      'Guest'
          9        CONCAT                                           ~8      'Hello+', ~7
         10        ASSIGN                                                   !1, ~8
    8    11        CONCAT                                           ~10     !1, '%0A'
         12        ECHO                                                     ~10
   10    13        ASSIGN                                                   !0, 'x'
   11    14        CONCAT                                           ~12     'Hello+', !0
         15        JMP_SET                                          ~13     ~12, ->17
         16        QM_ASSIGN                                        ~13     'Guest'
         17        ASSIGN                                                   !1, ~13
   12    18        CONCAT                                           ~15     !1, '%0A'
         19        ECHO                                                     ~15
         20      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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