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<?php $data = []; $age = $data['people'][0]['age'] ?? 10; var_dump($age); $data = [ 'people' => [ [ 'age' => 12 ] ] ]; $age = $data['people'][0]['age'] ?? 10; var_dump($age);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TuAqQ
function name:  (null)
number of ops:  21
compiled vars:  !0 = $data, !1 = $age
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        FETCH_DIM_IS                                     ~3      !0, 'people'
          2        FETCH_DIM_IS                                     ~4      ~3, 0
          3        FETCH_DIM_IS                                     ~5      ~4, 'age'
          4        COALESCE                                         ~6      ~5
          5        QM_ASSIGN                                        ~6      10
          6        ASSIGN                                                   !1, ~6
    5     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !1
          9        DO_ICALL                                                 
    7    10        ASSIGN                                                   !0, <array>
    8    11        FETCH_DIM_IS                                     ~10     !0, 'people'
         12        FETCH_DIM_IS                                     ~11     ~10, 0
         13        FETCH_DIM_IS                                     ~12     ~11, 'age'
         14        COALESCE                                         ~13     ~12
         15        QM_ASSIGN                                        ~13     10
         16        ASSIGN                                                   !1, ~13
    9    17        INIT_FCALL                                               'var_dump'
         18        SEND_VAR                                                 !1
         19        DO_ICALL                                                 
         20      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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