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<?php $a = array(); echo $a['qqq']; $a['qqq']++; $a['qqq']++; echo $a['qqq'];
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/G6ANE
function name:  (null)
number of ops:  10
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        FETCH_DIM_R                                      ~2      !0, 'qqq'
          2        ECHO                                                     ~2
    7     3        FETCH_DIM_RW                                     $3      !0, 'qqq'
          4        PRE_INC                                                  $3
    8     5        FETCH_DIM_RW                                     $5      !0, 'qqq'
          6        PRE_INC                                                  $5
   10     7        FETCH_DIM_R                                      ~7      !0, 'qqq'
          8        ECHO                                                     ~7
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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