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<?php $arr = ['' => 'empty', 0 => 'zero', 1 => 'one']; var_dump($arr[false]); var_dump($arr[true]); var_dump((string) false); var_dump($arr[1.1]);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TrG4u
function name:  (null)
number of ops:  18
compiled vars:  !0 = $arr
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'var_dump'
          2        FETCH_DIM_R                                      ~2      !0, <false>
          3        SEND_VAL                                                 ~2
          4        DO_ICALL                                                 
    6     5        INIT_FCALL                                               'var_dump'
          6        FETCH_DIM_R                                      ~4      !0, <true>
          7        SEND_VAL                                                 ~4
          8        DO_ICALL                                                 
    8     9        INIT_FCALL                                               'var_dump'
         10        CAST                                          6  ~6      <false>
         11        SEND_VAL                                                 ~6
         12        DO_ICALL                                                 
   10    13        INIT_FCALL                                               'var_dump'
         14        FETCH_DIM_R                                      ~8      !0, 1.1
         15        SEND_VAL                                                 ~8
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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