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<?php $x = ['a' => ['b' => 1], 'c' => '']; var_dump( $x['a']['b'] ?? 'not');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0irQ7
function name:  (null)
number of ops:  9
compiled vars:  !0 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'var_dump'
          2        FETCH_DIM_IS                                     ~2      !0, 'a'
          3        FETCH_DIM_IS                                     ~3      ~2, 'b'
          4        COALESCE                                         ~4      ~3
          5        QM_ASSIGN                                        ~4      'not'
          6        SEND_VAL                                                 ~4
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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