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

Generated using Vulcan Logic Dumper, using php 8.0.0


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