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<?php $r = [ '123' => "1", 'W' => "123", ]; var_dump($r); print_r($r['W']); $r['W'] = '999'; var_dump($r); print_r($r['W']);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/oWS6G
function name:  (null)
number of ops:  18
compiled vars:  !0 = $r
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    8     1        INIT_FCALL                                                   'var_dump'
          2        SEND_VAR                                                     !0
          3        DO_ICALL                                                     
    9     4        INIT_FCALL                                                   'print_r'
          5        FETCH_DIM_R                                          ~3      !0, 'W'
          6        SEND_VAL                                                     ~3
          7        DO_ICALL                                                     
   11     8        ASSIGN_DIM                                                   !0, 'W'
          9        OP_DATA                                                      '999'
   13    10        INIT_FCALL                                                   'var_dump'
         11        SEND_VAR                                                     !0
         12        DO_ICALL                                                     
   14    13        INIT_FCALL                                                   'print_r'
         14        FETCH_DIM_R                                          ~7      !0, 'W'
         15        SEND_VAL                                                     ~7
         16        DO_ICALL                                                     
         17      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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