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<?php $a = 1; $x = "4" . isset($a) ? $a : 2; var_dump($x); $a = 1; $x = "4" . $a ?? 2; var_dump($x);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 6
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Nvubm
function name:  (null)
number of ops:  20
compiled vars:  !0 = $a, !1 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 1
    3     1        ISSET_ISEMPTY_CV                                 ~3      !0
          2        CONCAT                                           ~4      '4', ~3
          3      > JMPZ                                                     ~4, ->6
          4    >   QM_ASSIGN                                        ~5      !0
          5      > JMP                                                      ->7
          6    >   QM_ASSIGN                                        ~5      2
          7    >   ASSIGN                                                   !1, ~5
    4     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !1
         10        DO_ICALL                                                 
    6    11        ASSIGN                                                   !0, 1
    7    12        CONCAT                                           ~9      '4', !0
         13        COALESCE                                         ~10     ~9
         14        QM_ASSIGN                                        ~10     2
         15        ASSIGN                                                   !1, ~10
    8    16        INIT_FCALL                                               'var_dump'
         17        SEND_VAR                                                 !1
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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