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<?php $value = 5; $false = false; $empty = ''; $null = null; echo $null ?? $value; echo $notSet ?? null ?? $value; echo $null ?? $zero ?? $value; var_dump($false ?? $value); var_dump($empty ?? $value);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vCi9L
function name:  (null)
number of ops:  28
compiled vars:  !0 = $value, !1 = $false, !2 = $empty, !3 = $null, !4 = $notSet, !5 = $zero
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 5
    4     1        ASSIGN                                                   !1, <false>
    5     2        ASSIGN                                                   !2, ''
    6     3        ASSIGN                                                   !3, null
    8     4        COALESCE                                         ~10     !3
          5        QM_ASSIGN                                        ~10     !0
          6        ECHO                                                     ~10
    9     7        COALESCE                                         ~11     !4
          8        COALESCE                                         ~12     null
          9        QM_ASSIGN                                        ~12     !0
         10        QM_ASSIGN                                        ~11     ~12
         11        ECHO                                                     ~11
   10    12        COALESCE                                         ~13     !3
         13        COALESCE                                         ~14     !5
         14        QM_ASSIGN                                        ~14     !0
         15        QM_ASSIGN                                        ~13     ~14
         16        ECHO                                                     ~13
   11    17        INIT_FCALL                                               'var_dump'
         18        COALESCE                                         ~15     !1
         19        QM_ASSIGN                                        ~15     !0
         20        SEND_VAL                                                 ~15
         21        DO_ICALL                                                 
   12    22        INIT_FCALL                                               'var_dump'
         23        COALESCE                                         ~17     !2
         24        QM_ASSIGN                                        ~17     !0
         25        SEND_VAL                                                 ~17
         26        DO_ICALL                                                 
         27      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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