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<?php $foo = 'd'; var_dump($foo ?: 'not'); $foo = null; var_dump($foo ?: 'not'); $foo = false; var_dump($foo ?: 'not'); $foo = 0; var_dump($foo ?: 'not'); $foo = '0'; var_dump($foo ?: 'not');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QH1rr
function name:  (null)
number of ops:  31
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'd'
    3     1        INIT_FCALL                                               'var_dump'
          2        JMP_SET                                          ~2      !0, ->4
          3        QM_ASSIGN                                        ~2      'not'
          4        SEND_VAL                                                 ~2
          5        DO_ICALL                                                 
    5     6        ASSIGN                                                   !0, null
    6     7        INIT_FCALL                                               'var_dump'
          8        JMP_SET                                          ~5      !0, ->10
          9        QM_ASSIGN                                        ~5      'not'
         10        SEND_VAL                                                 ~5
         11        DO_ICALL                                                 
    8    12        ASSIGN                                                   !0, <false>
    9    13        INIT_FCALL                                               'var_dump'
         14        JMP_SET                                          ~8      !0, ->16
         15        QM_ASSIGN                                        ~8      'not'
         16        SEND_VAL                                                 ~8
         17        DO_ICALL                                                 
   11    18        ASSIGN                                                   !0, 0
   12    19        INIT_FCALL                                               'var_dump'
         20        JMP_SET                                          ~11     !0, ->22
         21        QM_ASSIGN                                        ~11     'not'
         22        SEND_VAL                                                 ~11
         23        DO_ICALL                                                 
   14    24        ASSIGN                                                   !0, '0'
   15    25        INIT_FCALL                                               'var_dump'
         26        JMP_SET                                          ~14     !0, ->28
         27        QM_ASSIGN                                        ~14     'not'
         28        SEND_VAL                                                 ~14
         29        DO_ICALL                                                 
         30      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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