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<?php $array = [1]; $object = new stdclass; $object->foo = 1; var_dump(++$array[0], ++$object->foo, --$array[0], --$object->foo);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TDOZT
function name:  (null)
number of ops:  19
compiled vars:  !0 = $array, !1 = $object
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        NEW                                              $3      'stdclass'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !1, $3
    4     4        ASSIGN_OBJ                                               !1, 'foo'
          5        OP_DATA                                                  1
    6     6        INIT_FCALL                                               'var_dump'
          7        FETCH_DIM_RW                                     $7      !0, 0
          8        PRE_INC                                          ~8      $7
          9        SEND_VAL                                                 ~8
         10        PRE_INC_OBJ                                      ~9      !1, 'foo'
         11        SEND_VAL                                                 ~9
         12        FETCH_DIM_RW                                     $10     !0, 0
         13        PRE_DEC                                          ~11     $10
         14        SEND_VAL                                                 ~11
         15        PRE_DEC_OBJ                                      ~12     !1, 'foo'
         16        SEND_VAL                                                 ~12
         17        DO_ICALL                                                 
         18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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