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<?php $arr = [1=>[[100]], 2=>[[200]]]; $ref = &$arr[1]; $ref[] = [101]; var_dump($arr);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2a0jP
function name:  (null)
number of ops:  9
compiled vars:  !0 = $arr, !1 = $ref
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        FETCH_DIM_W                                      $3      !0, 1
          2        ASSIGN_REF                                               !1, $3
    5     3        ASSIGN_DIM                                               !1
          4        OP_DATA                                                  <array>
    6     5        INIT_FCALL                                               'var_dump'
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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